{Embryonic sac} or {Embryonic vesicle} (Bot.), the vesicle within which the embryo is developed in the ovule; -- sometimes called also {amnios sac}, and {embryonal sac}. [1913 Webster]
The Collaborative International Dictionary of English. 2000.
embryonic sac — blastocyst … Medical dictionary
Embryonic — Em bry*on ic, a. (Biol.) Of or pertaining to an embryo; embryonal; rudimentary. [1913 Webster] {Embryonic sac} or {Embryonic vesicle} (Bot.), the vesicle within which the embryo is developed in the ovule; sometimes called also {amnios sac}, and… … The Collaborative International Dictionary of English
Embryonic vesicle — Embryonic Em bry*on ic, a. (Biol.) Of or pertaining to an embryo; embryonal; rudimentary. [1913 Webster] {Embryonic sac} or {Embryonic vesicle} (Bot.), the vesicle within which the embryo is developed in the ovule; sometimes called also {amnios… … The Collaborative International Dictionary of English
Embryonic hemoglobin — is a protein transcribed by the HBE1 gene in embryonic cells. It is produced in the blood islands in the embryonic yolk sac during the mesoblastic stage (1st week of pregnancy till end of pregnancy). The protein is commonly referred to as… … Wikipedia
embryonic membrane — n. any of several living membranes enclosing or closely associated with the developing vertebrate embryo, as the allantois, amnion, yolk sac, etc. * * * … Universalium
embryonic membrane — n. any of several living membranes enclosing or closely associated with the developing vertebrate embryo, as the allantois, amnion, yolk sac, etc … English World dictionary
embryonic disc — embryonic disc, the part of the inner cell mass of the blastula from which the embryo develops. It is located between two cavities, the amniotic cavity and the yolk sac. It consists of three germ layers, the ectoderm, the mesoderm, and the… … Useful english dictionary
sac — 1. A pouch or bursa. SYN: saccus [TA]. SEE ALSO: sacculus. 2. An encysted abscess at the root of a tooth. 3. The capsule of a tumor, or envelope of a cyst. [L. saccus, a … Medical dictionary
amnios sac — Embryonic Em bry*on ic, a. (Biol.) Of or pertaining to an embryo; embryonal; rudimentary. [1913 Webster] {Embryonic sac} or {Embryonic vesicle} (Bot.), the vesicle within which the embryo is developed in the ovule; sometimes called also {amnios… … The Collaborative International Dictionary of English
embryonal sac — Embryonic Em bry*on ic, a. (Biol.) Of or pertaining to an embryo; embryonal; rudimentary. [1913 Webster] {Embryonic sac} or {Embryonic vesicle} (Bot.), the vesicle within which the embryo is developed in the ovule; sometimes called also {amnios… … The Collaborative International Dictionary of English
