Biomaterial Database

[Is sexual differentiation in cephalopods embryos (Sepia officinalis L) under endocrine control (author's transl)]. 1979

J Lemaire, and A Richard

The sex differenciation in the gonad of the cuttlefish is only evident after the hatching, -- the "A" cells become spermatogonia or ovogonia. In the embryonic gonads, bigger cells called "B" seem participate in this differenciation (ultrastructural active aspects in concordance with sexual differentiation).

UI	MeSH Term	Description	Entries
D008974	Mollusca	A phylum of the kingdom Metazoa. Mollusca have soft, unsegmented bodies with an anterior head, a dorsal visceral mass, and a ventral foot. Most are encased in a protective calcareous shell. It includes the classes GASTROPODA; BIVALVIA; CEPHALOPODA; Aplacophora; Scaphopoda; Polyplacophora; and Monoplacophora.	Molluscs,Mollusks,Mollusc,Molluscas,Mollusk
D006066	Gonads	The gamete-producing glands, OVARY or TESTIS.	Gonad
D006728	Hormones	Chemical substances having a specific regulatory effect on the activity of a certain organ or organs. The term was originally applied to substances secreted by various ENDOCRINE GLANDS and transported in the bloodstream to the target organs. It is sometimes extended to include those substances that are not produced by the endocrine glands but that have similar effects.	Hormone,Hormone Receptor Agonists,Agonists, Hormone Receptor,Receptor Agonists, Hormone
D000818	Animals	Unicellular or multicellular, heterotrophic organisms, that have sensation and the power of voluntary movement. Under the older five kingdom paradigm, Animalia was one of the kingdoms. Under the modern three domain model, Animalia represents one of the many groups in the domain EUKARYOTA.	Animal,Metazoa,Animalia
D012733	Sex Differentiation	The process in developing sex- or gender-specific tissue, organ, or function after SEX DETERMINATION PROCESSES have set the sex of the GONADS. Major areas of sex differentiation occur in the reproductive tract (GENITALIA) and the brain.	Differentiation, Sex,Sexual Differentiation,Differentiation, Sexual