Given an abstract, indicate which of the provided candidate titles (Option1 and Option2) best describes it (respond with the text of the title, not option1/2).

Q: Abstract: The IgG and IgM specific antibodies against a panel of 23 anaerobic gut bacteria were examined in Crohn's disease, ulcerative colitis, and healthy controls. Four of the organisms, Bifidobacterium bifidum, Coprococcus comes (ME46), Coprococcus comes (Sp4), and Eubacterium limosum gave abnormal antibody titres in Crohn's disease compared with those of controls. In Crohn's disease specific IgG antibodies to three of the organisms were low and the IgM antibodies were higher than those of controls. IgM antibodies were also raised in ulcerative colitis. Antigenic cross reactivity could be shown between some of these organisms. The possible clinical importance of these abnormal antibody responses to specific organisms is unexplained.
Which is the apt title for the abstract? option1: Antibody response to anaerobic coccoid rods in Crohn's disease. option2: Hypodiploid hemopoietic precursors in myelodysplastic syndromes [letter]

A: Antibody response to anaerobic coccoid rods in Crohn's disease.
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Q: Abstract: The authors report a case of cervical chondroma presenting with a syndrome of spinal cord compression in a 76-year-old woman. Total surgical removal of the lesion was followed by partial neurological recovery. Chondromas of the vertebral column are rarely reported in the literature.
Which is the apt title for the abstract? option1: Chondroma of the cervical spine. Case report. option2: Puerperal pelvic thrombophlebitis: impact on diagnosis and treatment using x-ray computed tomography and magnetic resonance imaging.

A: Chondroma of the cervical spine. Case report.
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Q: Abstract: After fertilization, the protein products of the Drosophila homeobox gene caudal (cad) accumulate in a concentration gradient spanning the anteroposterior axis of the developing embryo. Mutations in the cad gene that reduce or eliminate the gradient cause abnormal zygotic expression of at least one segmentation gene (fushi tarazu) and alter the global body pattern.
Which is the apt title for the abstract? option1: A molecular gradient in early Drosophila embryos and its role in specifying the body pattern. option2: Increased MR signal intensity in skeletal muscle adjacent to malignant tumors: pathologic correlation and clinical relevance.

A:
A molecular gradient in early Drosophila embryos and its role in specifying the body pattern.
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