Q: Information: - Slug, or land slug, is a common name for any apparently shell-less terrestrial gastropod mollusc. The word "slug" is also often used as part of the common name of any gastropod mollusc that has no shell, a very reduced shell, or only a small internal shell, particularly sea slugs and semislugs (this is in contrast to the common name "snail", which applies to gastropods that have a coiled shell large enough that the animal can fully retract its soft parts into the shell). - Discodorididae is a taxonomic family of sea slugs , specifically dorid nudibranchs , marine gastropod mollusks in the superfamily Doridoidea . Species in this family belong to the cryptobranch dorid nudibranchs , i.e. they are able to retract their gills into a gill pocket ( cryptobranch = hidden gills ) . Most are small and hard to identify . Most are thought to feed at night on sponges , while during the day they search for dark areas or remain hidden under rocks . One example of a discodoridid is the '' Pacific sea lemon '' or '' speckled sea lemon '' , Peltodoris nobilis , which occurs off the coast of British Columbia to Baja California from low - tide waters to a depth of about 200 m. Not only is this species yellow with a bumpy surface , but it also gives off a strong fruity citrus smell when handled , adding to its resemblance to a lemon . - Doridacea is a taxonomic grouping of dorid nudibranchs, shell-less marine gastropod mollusks. included in the clade Euctenidiacea of the clade Nudibranchia. - Doridoidea, commonly known as dorid nudibranchs (and previously known as the taxon Cryptobranchia), are a taxonomic superfamily of medium to large, shell-less sea slugs, marine gastropod mollusks in the clade Doridacea, included in the clade Nudibranchia. What entity does 'discodorididae' has the relation 'parent taxon' with?
A: nudibranchia

Question: Information: - Nevus cells are a variant of melanocytes. They are larger than typical melanocytes, do not have dendrites, and have more abundant cytoplasm with coarse granules. They are usually located at the dermoepidermal junction or in the dermis of the skin. Dermal nevus cells can be further classified: type A (epithelioid) dermal nevus cells mature into type B (lymphocytoid) dermal nevus cells which mature further into type C (neuroid) dermal nevus cells, through a process involving downwards migration. - Blue nevus ( also known as '' blue neuronevus , '' '' dermal melanocytoma , '' and '' nevus bleu '' ) is a type of melanocytic nevus . The blue colour is caused by the pigment being deeper in the skin than in ordinary nevi . In principle they are harmless but they can sometimes be mimicked by malignant lesions , i.e. some melanomas can look like a blue nevus . - Melanocytes (or ) are melanin-producing neural-crest derived cells located in the bottom layer (the stratum basale) of the skin's epidermis, the middle layer of the eye (the uvea), the inner ear, meninges, bones, and heart. Melanin is the pigment primarily responsible for skin color. Once synthesised, melanin is contained in a special organelle called a melanosome and moved along arm-like structures called dendrites, so as to reach the keratinocytes. - A lesion is any abnormal damage or change in the tissue of an organism, usually caused by disease or trauma. "Lesion" is derived from the Latin word "laesio" meaning "injury". Lesions may occur in plants as well as animals. - A melanocytic nevus (also known as "nevocytic nevus") is a type of lesion that contains nevus cells (a type of melanocyte). Some sources equate the term mole with "melanocytic nevus". Other sources reserve the term "mole" for other purposes. What entity does 'blue nevus' has the relation 'subclass of' with?
Answer:
disease