Figure 2
From: The roles of Bcl-xL in modulating apoptosis during development of Xenopus laevis
Comparisons of TUNEL-positive nuclei between GFP and XR11 transgenic embryos during embryonic development. A. Cross-sections of embryos showing the distribution of TUNEL-positive nuclei at the level of the eye at stage 33. DAPI (blue) and TUNEL (red) images have been superimposed. Left: GFP transgenic embryo. R, retina; B, brain. Right: XR11 transgenic embryo. Dorsal is at the top. B. Mean numbers of TUNEL-positive nuclei in sections at stages 28, 33/34, 37/38 and 41. Error bars indicate standard error of the mean. Means were obtained by examining between 14 and 18 embryos for each category. A minimum of 4 and a maximum of 14 sections were examined for each embryo. Pooled data from multiple experiments.