embryonic axis

em·bry·on·ic ax·is

the cephalocaudal axis established in the embryo by the primitive streak.
References in periodicals archive ?
Temperature may also favor the production of growth promoting hormones and enzymes in the embryonic axis.
Neurological features depend on the severity of the malformation and on the segmental level along the longitudinal embryonic axis, the degree of resulting kyphosis and the presence of associated abnormalities.
In introductory biology courses, soaked corn "seeds" (yes, caryopses) are longitudinally bisected along the embryonic axis (the white "shield").
The longest of the 24 articles propose that mitochondrial decline and mtDNA damage are central to the etiology of age-related diseases, and review the genetic control of embryonic axis formation in zebrafish.