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primordium

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primordium /pri·mor·di·um/ (-um) pl. primor´dia   [L.] the earliest indication of an organ or part during embryonic development.
pri·mor·di·um (pr-môrd-m)
n. pl. pri·mor·di·a (-d-)
An aggregation of cells in the embryo indicating the first trace of an organ or structure.
primordium
[prīmôr′dē·əm] pl. primordia
Etymology: L, origin
the first recognizable stage in the embryonic development and differentiation of a particular organ, tissue, or structure. Also called anlage, rudiment.
primordium [pri-mor´de-um]
the first beginnings of an organ or part in the developing embryo.
primordium (primor´dem),
n the first evidence of an organ in a developing embryo.
primordium
the first beginnings of an organ or part in the developing embryo. Called also anlage.
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The proximal portion of the original primordium becomes the main duct of the salivary glands, and the terminal ducts dilate to form the secretory acini.
Unilateral submandibular gland aplasia: a rare phenomenon by Gupta, Neel; Palacios, Enrique; Barry, Shannon / Ear, Nose and Throat Journal
Hofmeister proposed that each new primordium develops on the tip of the growing stem in the spot that is farthest from older primordia.
Mathematical lives of plants: why plants grow in geometrically ... by Rehmeyer, Julie J. / Science News
The primordium forms when the fish is still in the larval stage, and its chemical composition contains a record of where the fish was born.
In tiny ear bones, the life story of a giant bluefin tuna by Cohen, Anne; Layne, Graham / Oceanus
 
 
 
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