Figure 2
From: Histone modifications in the male germ line of Drosophilaa
Meiotic and postmeiotic cells. (a, b) D. melanogaster, H4K12ac; late spermatid elongation stages (PM VI) and unlabeled sperm (stage PM VII). In the upper part elongating spermatids (PM VI/VII) with decreasing acetylated H4K12 are seen. (c, d) D. hydei, H4K16ac; two labeled daughter nuclei (N) after the first meiotic division. (e, f) D. melanogaster, H3S10p; elongating spermatids (PM V). (g, h) D. hydei, H4K16ac; young spermatids (PM III), very early elongation of the nucleus with chromatin in a restricted region. NK: Nebenkern, N: nucleus. (i, l) D. hydei, H4K20me2; early elongating spermatid nuclei (early PM V) with asymmetric label concentrated in the posterior part of the nucleus (p). (a, c, e, g, i, l) antibody reaction; (b, f, j, k) merged picture of DAPI and antibody; (d, h) DAPI. Staging of postmeiotic cells according to [2].