cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.34808/xmgr-gw21
title: Squamous cell carcinoma, metastatic, NOS - Female, 54 - Tissue image [9100730003273021]

description: This is the histopathological image of LYMPH NODES tissue sample obtained in Medical University Gdańsk and deposited in ZMDL-GUMED. The sample image was taken using: Pannoramic 250 3DHistech slide scanner (20x magnification) and saved to DICOM format. The detailed information about the patient, sample, and diagnosis are as follows: Patient:Age: 54Clinical description: Carcinoma of piriform sinus (squamous cell carcinoma). History of radio- and chemotherapy. Enlarged cervical lymph nodes and enlarged axillary lymph node.Gender: FemaleDiagnosis:Classification: ICD-O_3.2Classification code: SQUAMOUS CELL NEOPLASMSDiagnosis: Squamous cell carcinoma, metastatic, NOSResult of the histopathological examination: Metastasis of squamous cell carcinoma: CK5/6+, p63+, p40+, p16-, CK7-, CK20-.
CK 5/6: cytoplasmic expression in some carcinoma cells.Sample:Material: FFPECollecting method: Core-needle biopsyTopography: LYMPH NODESOrgan: LYMPH NODESTissue: Axillary lymph nodeType of staining: positive/IHCStaining: Not applicableAntibody: CK 5/6Technology:Equipment: Pannoramic 250 3DHistechLens: 20xOrganization:Source: Medical University Gdańsk
DOI: 10.48370/ofd/ggtpwl
title: Myodes glareolus - 16341, Zoological collection of the Mammal Research Institute, PAS

description: Myodes glareolus (Bank vole) from Zoological collection of the Mammal Research Institute, PAS. Collected 1956-01-17, in: Białowieża National Park, Poland. Material type:
DOI: 10.34808/mgv5-0f48
title: OTHER AN UNSPECIFIED FEMALE GENITAL ORGANS, Parametrium - Female, 50 - Tissue image [5130730017408181]

description: This is the histopathological image of OTHER AN UNSPECIFIED FEMALE GENITAL ORGANS tissue sample obtained in Medical University Gdańsk and deposited in ZMDL-GUMED. The sample image was taken using: Pannoramic 250 3DHistech slide scanner (20x magnification) and saved to DICOM format. The detailed information about the patient, sample, and diagnosis are as follows: Patient:Age: 50Clinical description: Cervical erosion. CIN2 confirmed  in biopsyGender: FemaleDiagnosis:Classification: HealthyClassification code: Diagnosis: Result of the histopathological examination: Parametria  with signs of hypeaemia.Sample:Material: FFPECollecting method: Surgical specimenTopography: FEMALE GENITAL ORGANSOrgan: OTHER AN UNSPECIFIED FEMALE GENITAL ORGANSTissue: ParametriumType of staining: positive/HEStaining: Not applicableAntibody: Not applicableTechnology:Equipment: Pannoramic 250 3DHistechLens: 20xOrganization:Source: Medical University Gdańsk
DOI: 10.34808/jmzt-jz46
title: CERVIX UTERI, Cervical canal - Female, 83 - Tissue image [12050630013031771]

description: This is the histopathological image of CERVIX UTERI tissue sample obtained in Medical University Gdańsk and deposited in ZMDL-GUMED. The sample image was taken using: Pannoramic 250 3DHistech slide scanner (20x magnification) and saved to DICOM format. The detailed information about the patient, sample, and diagnosis are as follows: Patient:Age: 83Clinical description: Cervival polypGender: FemaleDiagnosis:Classification: HealthyClassification code: Diagnosis: Result of the histopathological examination: Small fragments of atrophic parepidermal epithelium and normal mucosa of the cervical canal.
IHC: p16 (-), Ki67 (+ / +++).Sample:Material: FFPECollecting method: ScrapingsTopography: FEMALE GENITAL ORGANSOrgan: CERVIX UTERITissue: Cervical canalType of staining: positive/HEStaining: Not applicableAntibody: Not applicableTechnology:Equipment: Pannoramic 250 3DHistechLens: 20xOrganization:Source: Medical University Gdańsk
DOI: 10.34808/6zfn-ew18
title: Abnormal cytological findings - Female, 32 - Cell image [5050730010507471]

description: This is the histopathological image of CERVIX UTERI cell sample obtained in Medical University Gdańsk and deposited in ZMDL-GUMED. The sample image was taken using: Pannoramic 250 3DHistech slide scanner (20x magnification) and saved to DICOM format. The detailed information about the patient, sample, and diagnosis are as follows: Patient:Age: 32Clinical description: ProphylaxisGender: FemaleDiagnosis:Classification: ICD-10_10-20Classification code: Chapter XVIII - Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classifiedDiagnosis: Abnormal cytological findingsResult of the histopathological examination: NILM (Negative for Intraepithelial Lesion or Malignancy). Bacterial vaginosis. Papsmear contains multiple superficial epithelial cells (second phase of the cycle), including multiple clue cells, glandular cervical cells (single or in groups) and single cells from the transformation zone. Among them sparse granulocytes partly adhering to the epithelial cells.Sample:Material: SurePathCollecting method: Exfoliative cytologyTopography: FEMALE GENITAL ORGANSOrgan: CERVIX UTERITissue: ExocervixType of staining: positive/HCStaining: PapanicolaouAntibody: Not applicableTechnology:Equipment: Pannoramic 250 3DHistechLens: 20xOrganization:Source: Medical University Gdańsk
DOI: 10.48370/ofd/gmiqpy
title: Myodes glareolus - 164213, Zoological collection of the Mammal Research Institute, PAS

description: Myodes glareolus (Bank vole) from Zoological collection of the Mammal Research Institute, PAS. Collected 1996-07-02, in: Białowieża National Park, Poland. Material type:
DOI: 10.34808/9teb-6e77
title: Preterm labour with preterm delivery - Male, 0 - Tissue image [3280730025606491]

description: This is the histopathological image of ADRENAL GLAND tissue sample obtained in Medical University Gdańsk and deposited in ZMDL-GUMED. The sample image was taken using: VS200 Olympus slide scanner (20x magnification) and saved to DICOM format. The detailed information about the patient, sample, and diagnosis are as follows: Patient:Age: 0Clinical description: Grav III. Hbd 28. After TTTS treatment. Prematurity. Circulatory failure.Gender: MaleDiagnosis:Classification: ICD-10_10-20Classification code: Chapter XV - Pregnancy, childbirth and the puerperiumDiagnosis: Preterm labour with preterm deliveryResult of the histopathological examination: Adrenal glands with normal structure.Sample:Material: FFPECollecting method: Autopsy specimenTopography: THYROID AND OTHER ENDOCRINE GLANDSOrgan: ADRENAL GLANDTissue: Adrenal, NOSType of staining: positive/HEStaining: Not applicableAntibody: Not applicableTechnology:Equipment: VS200 OlympusLens: 20xOrganization:Source: Medical University Gdańsk
DOI: 10.34808/z9yq-ne32
title: Neoplasm, malignant - Female, 68 - Tissue image [10310629594693071]

description: This is the histopathological image of BRONCHUS AND LUNG tissue sample obtained in Medical University Gdańsk and deposited in ZMDL-GUMED. The sample image was taken using: Pannoramic 250 3DHistech slide scanner (20x magnification) and saved to DICOM format. The detailed information about the patient, sample, and diagnosis are as follows: Patient:Age: 68Clinical description: Tumor of the lungGender: FemaleDiagnosis:Classification: ICD-O_3.2Classification code: NEOPLASMS, NOSDiagnosis: Neoplasm, malignantResult of the histopathological examination: Adenocarcinoma of the lungSample:Material: FFPECollecting method: Surgical specimenTopography: RESPIRATORY SYSTEM AND INTRATORACIC ORGANSOrgan: BRONCHUS AND LUNGTissue: Lung, NOSType of staining: positive/HEStaining: Hematoxylin & eosinAntibody: Not applicableTechnology:Equipment: Pannoramic 250 3DHistechLens: 20xOrganization:Source: Medical University Gdańsk
DOI: 10.34808/y6pf-vw35
title: Neuroblastoma, NOS - Male, 5 - Tissue image [5070730026182381]

description: This is the histopathological image of RETROPERITONEUM AND PERITONEUM tissue sample obtained in Medical University Gdańsk and deposited in ZMDL-GUMED. The sample image was taken using: Pannoramic 250 3DHistech slide scanner (20x magnification) and saved to DICOM format. The detailed information about the patient, sample, and diagnosis are as follows: Patient:Age: 5Clinical description: Gender: MaleDiagnosis:Classification: ICD-O_3.2Classification code: NEUROEPITHELIOMATOUS NEOPLASMSDiagnosis: Neuroblastoma, NOSResult of the histopathological examination: Sample:Material: FFPECollecting method: Surgical biopsyTopography: RETROPERITONEUM AND PERITONEUMOrgan: RETROPERITONEUM AND PERITONEUMTissue: RetroperitoneumType of staining: positive/IHCStaining: Not applicableAntibody: Chromogranin ATechnology:Equipment: Pannoramic 250 3DHistechLens: 20xOrganization:Source: Medical University Gdańsk
DOI: 10.48370/ofd/mk0twm
title: Myodes glareolus - 62001, Zoological collection of the Mammal Research Institute, PAS

description: Myodes glareolus (Bank vole) from Zoological collection of the Mammal Research Institute, PAS. Collected 1967-02-08, in: Białowieża National Park, Poland. Material type:
DOI: 10.34808/z8a4-bh89
title: Mucinous carcinoma - Female, 73 - Tissue image [3150630013121521]

description: This is the histopathological image of BREAST tissue sample obtained in Medical University Gdańsk and deposited in ZMDL-GUMED. The sample image was taken using: Pannoramic 250 3DHistech slide scanner (20x magnification) and saved to DICOM format. The detailed information about the patient, sample, and diagnosis are as follows: Patient:Age: 73Clinical description: Central tumor of left breast, diameter 1 cm. Core needle biopsy: mucinous carcinoma of breast.Gender: FemaleDiagnosis:Classification: ICD-O_3.2Classification code: CYSTIC, MUCINOUS AND SEROUS NEOPLASMSDiagnosis: Mucinous carcinomaResult of the histopathological examination: Mucinous carcinoma of breast.Sample:Material: FFPECollecting method: Surgical specimenTopography: BREASTOrgan: BREASTTissue: Central portion of breastType of staining: positive/HEStaining: Not applicableAntibody: Not applicableTechnology:Equipment: Pannoramic 250 3DHistechLens: 20xOrganization:Source: Medical University Gdańsk
DOI: 10.34808/6h1e-rx73
title: Sarcoma, NOS - Female, 92 - Tissue image [4260730006796601]

description: This is the histopathological image of CONNECTIVE, SUBCUTANEOUS AND OTHER SOFT TISSUES tissue sample obtained in Medical University Gdańsk and deposited in ZMDL-GUMED. The sample image was taken using: Pannoramic 250 3DHistech slide scanner (20x magnification) and saved to DICOM format. The detailed information about the patient, sample, and diagnosis are as follows: Patient:Age: 92Clinical description: Lipoma of the left forearmGender: FemaleDiagnosis:Classification: ICD-O_3.2Classification code: SOFT TISSUE TUMORS AND SARCOMAS, NOSDiagnosis: Sarcoma, NOSResult of the histopathological examination: Dedifferentiated liposarcoma
IHC: Ki67: around 10%Sample:Material: FFPECollecting method: Surgical specimenTopography: CONNECTIVE, SUBCUTANEOUS AND OTHER SOFT TISSUESOrgan: CONNECTIVE, SUBCUTANEOUS AND OTHER SOFT TISSUESTissue: Connective, subcutaneous and other soft tissues of forearmType of staining: positive/IHCStaining: Not applicableAntibody: Ki-67Technology:Equipment: Pannoramic 250 3DHistechLens: 20xOrganization:Source: Medical University Gdańsk
DOI: 10.48370/ofd/za8mkj
title: Myodes glareolus - 13636, Zoological collection of the Mammal Research Institute, PAS

description: Myodes glareolus (Bank vole) from Zoological collection of the Mammal Research Institute, PAS. Collected 1955-09-06, in: Białowieża National Park, Poland. Material type:
DOI: 10.34808/8b7n-3322
title: Desmoplastic small round cell tumor - Male, 6 - Tissue image [5070730026206061]

description: This is the histopathological image of RETROPERITONEUM AND PERITONEUM tissue sample obtained in Medical University Gdańsk and deposited in ZMDL-GUMED. The sample image was taken using: Pannoramic 250 3DHistech slide scanner (20x magnification) and saved to DICOM format. The detailed information about the patient, sample, and diagnosis are as follows: Patient:Age: 6Clinical description: Gender: MaleDiagnosis:Classification: ICD-O_3.2Classification code: SOFT TISSUE TUMORS AND SARCOMAS, NOSDiagnosis: Desmoplastic small round cell tumorResult of the histopathological examination: Sample:Material: FFPECollecting method: Surgical specimenTopography: RETROPERITONEUM AND PERITONEUMOrgan: RETROPERITONEUM AND PERITONEUMTissue: RetroperitoneumType of staining: positive/IHCStaining: Not applicableAntibody: s100Technology:Equipment: Pannoramic 250 3DHistechLens: 20xOrganization:Source: Medical University Gdańsk
DOI: 10.34808/ap40-bn23
title: Mixed germ cell tumor - Male, 32 - Tissue image [10100730045419851]

description: This is the histopathological image of TESTIS tissue sample obtained in Medical University Gdańsk and deposited in ZMDL-GUMED. The sample image was taken using: Pannoramic 250 3DHistech slide scanner (20x magnification) and saved to DICOM format. The detailed information about the patient, sample, and diagnosis are as follows: Patient:Age: 32Clinical description: Tumor of right testis. Elevated level of AFP and bHCG.Gender: MaleDiagnosis:Classification: ICD-O_3.2Classification code: GERM CELL NEOPLASMSDiagnosis: Mixed germ cell tumorResult of the histopathological examination: Mixed germ cell tumor: seminoma (CD117+, PLAP+), embryonal carcinoma (CKAE1/AE3+, CD30+), teratoma. GCNIS is present (PLAP+). S100-, EMA-, SYN-.Sample:Material: FFPECollecting method: Surgical specimenTopography: MALE GENITAL ORGANSOrgan: TESTISTissue: Testis, NOSType of staining: positive/HEStaining: Not applicableAntibody: Not applicableTechnology:Equipment: Pannoramic 250 3DHistechLens: 20xOrganization:Source: Medical University Gdańsk
DOI: 10.48370/ofd/j0ncqh
title: Myodes glareolus - 65513, Zoological collection of the Mammal Research Institute, PAS

description: Myodes glareolus (Bank vole) from Zoological collection of the Mammal Research Institute, PAS. Collected 1967-09-29, in: Białowieża National Park, Poland. Material type:
DOI: 10.34808/2794-pz42
title: Myxofibrosarcoma - Male, 70 - Tissue image [9270729565542961]

description: This is the histopathological image of CONNECTIVE, SUBCUTANEOUS AND OTHER SOFT TISSUES tissue sample obtained in Medical University Gdańsk and deposited in ZMDL-GUMED. The sample image was taken using: Pannoramic 250 3DHistech slide scanner (20x magnification) and saved to DICOM format. The detailed information about the patient, sample, and diagnosis are as follows: Patient:Age: 70Clinical description: 4 cm palpable mobile tumor of right supraclavicular region. CT: 12 x 24 mm oval heterogenous tumor of right supraclavicular region.Gender: MaleDiagnosis:Classification: ICD-O_3.2Classification code: FIBROMATOUS NEOPLASMSDiagnosis: MyxofibrosarcomaResult of the histopathological examination: Myxofibrosarcoma, low grade: CD34+, SMA focally+, CD31-, CD68-, HHV8-, vWF-, S100-, SOX10-, CKAE1/AE3-, Ki-67 10%.Sample:Material: FFPECollecting method: Surgical specimenTopography: CONNECTIVE, SUBCUTANEOUS AND OTHER SOFT TISSUESOrgan: CONNECTIVE, SUBCUTANEOUS AND OTHER SOFT TISSUESTissue: Connective, subcutaneous and other soft tissues of supraclavicular regionType of staining: positive/HEStaining: Not applicableAntibody: Not applicableTechnology:Equipment: Pannoramic 250 3DHistechLens: 20xOrganization:Source: Medical University Gdańsk
DOI: 10.34808/gvde-bj39
title: Adenocarcinoma, NOS - Female, 51 - Tissue image [8200729592213721]

description: This is the histopathological image of OTHER AND ILL-DEFINED DIGESTIVE ORGANS tissue sample obtained in Medical University Gdańsk and deposited in ZMDL-GUMED. The sample image was taken using: Pannoramic 250 3DHistech slide scanner (20x magnification) and saved to DICOM format. The detailed information about the patient, sample, and diagnosis are as follows: Patient:Age: 51Clinical description: Fragment of a tumor from the abdominal cavityGender: FemaleDiagnosis:Classification: ICD-O_3.2Classification code: ADENOMAS AND ADENOCARCINOMASDiagnosis: Adenocarcinoma, NOSResult of the histopathological examination: In the samples from the tumor fragment  a malignancy was found - adenocarcinoma with immunophenotype:
CK7 (+), CK19 (+), CK20 (-), ER (-), PR (-), CDX2 (-), TTF1 (-).
The morphological picture may correspond to the spread of adenocarcinoma of the bile ducts or the pancreas.Sample:Material: FFPECollecting method: Surgical specimenTopography: DIGESTIVE ORGANSOrgan: OTHER AND ILL-DEFINED DIGESTIVE ORGANSTissue: Overlapping lesion of digestive systemType of staining: positive/HEStaining: Not applicableAntibody: Not applicableTechnology:Equipment: Pannoramic 250 3DHistechLens: 20xOrganization:Source: Medical University Gdańsk
DOI: 10.34808/015x-bb92
title: Adenocarcinoma, metastatic, NOS - Female, 30 - Tissue image [9080730005561001]

description: This is the histopathological image of LIVER AND INTRAHEPATIC BILE DUCTS tissue sample obtained in Medical University Gdańsk and deposited in ZMDL-GUMED. The sample image was taken using: Pannoramic 250 3DHistech slide scanner (20x magnification) and saved to DICOM format. The detailed information about the patient, sample, and diagnosis are as follows: Patient:Age: 30Clinical description: History of colon carcinoma.Gender: FemaleDiagnosis:Classification: ICD-O_3.2Classification code: ADENOMAS AND ADENOCARCINOMASDiagnosis: Adenocarcinoma, metastatic, NOSResult of the histopathological examination: Liver with metastasis of colorectal adenocarcinoma. Adenocarcinoma cells: CK20+, CDX2+, SATB2+, CK7-.Sample:Material: FFPECollecting method: Core-needle biopsyTopography: DIGESTIVE ORGANSOrgan: LIVER AND INTRAHEPATIC BILE DUCTSTissue: LiverType of staining: positive/HEStaining: Not applicableAntibody: Not applicableTechnology:Equipment: Pannoramic 250 3DHistechLens: 20xOrganization:Source: Medical University Gdańsk
DOI: 10.48370/ofd/ijfxmn
title: Myodes glareolus - 11301, Zoological collection of the Mammal Research Institute, PAS

description: Myodes glareolus (Bank vole) from Zoological collection of the Mammal Research Institute, PAS. Collected 1955-07-22, in: Białowieża National Park, Poland. Material type:
DOI: 10.34808/b3ba-1n89
title: Other specified disorders of brain - Male, 56 - Tissue image [10060730015613391]

description: This is the histopathological image of BRAIN tissue sample obtained in Medical University Gdańsk and deposited in ZMDL-GUMED. The sample image was taken using: Pannoramic 250 3DHistech slide scanner (20x magnification) and saved to DICOM format. The detailed information about the patient, sample, and diagnosis are as follows: Patient:Age: 56Clinical description: Myocarditis. Cardiac arrest. Shock.Gender: MaleDiagnosis:Classification: ICD-10_10-20Classification code: Chapter VI - Diseases of the nervous systemDiagnosis: Other specified disorders of brainResult of the histopathological examination: In cerebral specimens passive hyperemia, arteriosclerosis, focal perivascular lymphocytic infiltrates, local neurophagocytosis in the cerebral cortex.Sample:Material: FFPECollecting method: Autopsy specimenTopography: EYE, BRAIN AND OTHER PARTS OF CENTRAL NERVOUS SYSTEMOrgan: BRAINTissue: CerebrumType of staining: positive/HEStaining: Not applicableAntibody: Not applicableTechnology:Equipment: Pannoramic 250 3DHistechLens: 20xOrganization:Source: Medical University Gdańsk
DOI: 10.34808/kkns-6452
title: Hodgkin lymphoma, NOS - Female, 15 - Tissue image [5040730027999771]

description: This is the histopathological image of HEART, MEDIASTINUM, AND PLEURA tissue sample obtained in Medical University Gdańsk and deposited in ZMDL-GUMED. The sample image was taken using: Pannoramic 250 3DHistech slide scanner (20x magnification) and saved to DICOM format. The detailed information about the patient, sample, and diagnosis are as follows: Patient:Age: 15Clinical description: Mediastinal tumor.Gender: FemaleDiagnosis:Classification: ICD-O_3.2Classification code: CHOROBA HODGKINADiagnosis: Hodgkin lymphoma, NOSResult of the histopathological examination: Hodgkin's lymphoma, nodular sclerosis subtype.
IHC: CD15 (+), CD30 (+), PAX5 (+), LMP1 (-), LCA (-), CD20 (-), CD3 (-).Sample:Material: FFPECollecting method: Surgical specimenTopography: RESPIRATORY SYSTEM AND INTRATORACIC ORGANSOrgan: HEART, MEDIASTINUM, AND PLEURATissue: Posterior mediastinumType of staining: positive/HEStaining: Not applicableAntibody: Not applicableTechnology:Equipment: Pannoramic 250 3DHistechLens: 20xOrganization:Source: Medical University Gdańsk
DOI: 10.34808/p8rn-wv61
title: Hepatocellular carcinoma, NOS - Female, 63 - Tissue image [9230729557265201]

description: This is the histopathological image of LIVER AND INTRAHEPATIC BILE DUCTS tissue sample obtained in Medical University Gdańsk and deposited in ZMDL-GUMED. The sample image was taken using: Pannoramic 250 3DHistech slide scanner (20x magnification) and saved to DICOM format. The detailed information about the patient, sample, and diagnosis are as follows: Patient:Age: 63Clinical description: 10,5 x 14 x 13 cm tumor of right lobe of liver. Suspicion of HCC.Gender: FemaleDiagnosis:Classification: ICD-O_3.2Classification code: ADENOMAS AND ADENOCARCINOMASDiagnosis: Hepatocellular carcinoma, NOSResult of the histopathological examination: Hepatocellular carcinoma (HCC): HepPar+, Glypican-, CD34 (+ vessels, capillarization of hepatic sinusoids), srebro+ (highlights thickened hepatocyte plates), Ki-67 20%.Sample:Material: FFPECollecting method: Core-needle biopsyTopography: DIGESTIVE ORGANSOrgan: LIVER AND INTRAHEPATIC BILE DUCTSTissue: LiverType of staining: positive/IHCStaining: Not applicableAntibody: HepatocyteTechnology:Equipment: Pannoramic 250 3DHistechLens: 20xOrganization:Source: Medical University Gdańsk
DOI: 10.48370/ofd/gnbemp
title: Myodes glareolus - 14795, Zoological collection of the Mammal Research Institute, PAS

description: Myodes glareolus (Bank vole) from Zoological collection of the Mammal Research Institute, PAS. Collected 1955-09-24, in: Białowieża National Park, Poland. Material type:
DOI: 10.34808/hy2c-s371
title: CERVIX UTERI, Exocervix - Female, 45 - Tissue image [4100730020136201]

description: This is the histopathological image of CERVIX UTERI tissue sample obtained in University of Warmia and Mazury in Olsztyn and deposited in ZMDL-GUMED. The sample image was taken using: Pannoramic 1000 slide scanner (20x magnification) and saved to DICOM format. The detailed information about the patient, sample, and diagnosis are as follows: Patient:Age: 45Clinical description: Tumor of the cervix.Gender: FemaleDiagnosis:Classification: HealthyClassification code: Diagnosis: Result of the histopathological examination: Keratinizing squamous cell carcinoma of the cervix G2. Cancer involves the entire thickness of the cervical wall and reaches the internal uterine os.Sample:Material: FFPECollecting method: Surgical specimenTopography: FEMALE GENITAL ORGANSOrgan: CERVIX UTERITissue: ExocervixType of staining: positive/HEStaining: Not applicableAntibody: Not applicableTechnology:Equipment: Pannoramic 1000Lens: 20xOrganization:Source: University of Warmia and Mazury in Olsztyn