Signs of the principle body axes prior to primitive streak formation in the rabbit embryo


An early common element during anterior-posterior axis formation amongst amniotes is the primitive streak, running longitudinally in the two-layered embryonic disc. In mammals the primordium of this transient structure is the first definite morphological sign of the anterior-posterior axis, while in avian embryos the axis is visible and apparently defined… (More)
DOI: 10.1007/BF00186004


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