|
FIG. 2. Expression of troponin Ic (blue stain) is limited to the heart in Xenopus embryos. Troponin Ic expression was visualized by whole
mount in situ hybridization using a digoxygenin-labeled antisense troponin Ic RNA. (A) A stage 28-30 Xenopu.5 embryo showing that troponin
Ic is expressed when the heart is still a simple tube. (B) Magnified view of (A) showing that expression is limited to the heart. (C) A stage 36
Xenopu.s embryo showing expression when the heart has the characteristic S shape as a result of looping. (D) Troponin Ic expression in a
differentiated heart (stage 41). |