The effect of microgravity on tissue structure and function of rat testis. Ye Ding, Jin Tang, Jun Zou, Ruiping She, Yinghua Wang, Zhuo Yue, Jijing Tian, Kangkang Xia, Jun Yin and Desheng Wang. Braz J Med Biol Res 2011; 44: 1243-1250.

Figure 5. Detection of apoptosis by anti-bax and anti-bcl-2 immunoassay. In situ immunoassay for bax: A, control (CON) group for 7 days; B, tail-suspended (TS) group for 7 days; C, control group for 14 days; D, TS group for 14 days. In situ immunoassay for bcl-2: E, control group for 7 days; F, TS group for 7 days; G, control group for 14 days; H, TS group for 14 days. I, The bax/bcl-2 ratio is obtained by dividing the intensity of bax-positive substance by that of bcl-2-positive substance.