limb bud


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limb bud

[′lim ‚bəd]
(embryology)
A mound-shaped lateral proliferation of the embryonic trunk; the anlage of a limb.
References in periodicals archive ?
Experimental work12 clearly elucidates the requirement of retinoic acid for the initiation of outgrowth in the chick limb bud.
On the cellular level, the differentiation of limb bud into separate digits occurs via a complicated cascade of molecular signaling and pathways.
For example, in the developing limb bud, tissue regression has been largely associated to the molecular control of self-induced cell death (apoptosis).
1 Later on in the early 1990s it was postulated that thalidomide-induced teratogenicity was due to the inhibition of blood vessels in the developing limb buds during embryonic life.
After the germdisc elongates to form the germband, it begins to fold from the posterior ventral side, after which limb bud elongation occurs.
The effect of cell population density on the developmental fate of reaggregating mouse limb bud mesenchyme.
According to the Hamburger-Hamilton chicken embryonic developmental stage descriptions, limb bud should appear between developmental stages HH16 to HH18.
pugilator normal anecdysis to proecdysis and in proecdysis in limb bud regeneration is marked by large transient peaks in ecdysones.
Amphibians are able to regenerate lost limbs, but retinoids can scramble the genetic information at the site of a new limb bud, resulting in multiple legs.
The process takes 30 seconds, but a fluke burrowed in a tadpole's limb bud can cause an extra leg to sprout.
The resulting blastema, a mass of unspecialized cells, proliferates rapidly to form a limb bud.