Ultrastructure of the germ cells of the seminiferous epithelium in <i>Desmodus rotundus</i>.

<p>A: type A spermatogonia; PL-L: primary spermatocyte in preleptotene to leptotene; Z: primary spermatocyte in zygotene; P: primary spermatocyte in pachytene; D: primary spermatocyte in diplotene; Rs: round spermatid; Es: elongated spermatid; Tp: tunica propria; Ic: intertubular compartment; M and →: mitochondria; Cb: cytoplasmic bridge; *: Acrosomal cap.</p

Organization of the intertubular compartment in the testis of <i>Desmodus rotundus</i>.

<p>SE: seminiferous epithelium; BV: blood vessel; LS: lymphatic space; Black arrow: Leydig cell nuclei; *: Leydig cell nucleoli; White arrowhead: lipid droplet at Leydig cell cytoplasm. White arrow: mitochondria at Leydig cell cytoplasm. Light microscopy, scale bar 30 μm (a); Transmission electron microscopy, scale bar 2 μm (b).</p

Leydig cell morphometry in the bat <i>Desmodus rotundus</i>.

<p>Leydig cell morphometry in the bat <i>Desmodus rotundus</i>.</p

Germ cells and spermatic production indexes in <i>Desmodus rotundus</i>.

<p>Germ cells and spermatic production indexes in <i>Desmodus rotundus</i>.</p

The most advanced labelled germ cell types found after intratesticular bromodeoxiuridine injections in <i>Desmodus rotundus</i>.

<p>Leptotene to Zygotene cells in stage 3 (a) and type A spermatogonia in stage 3 to 4 (b) of the seminiferous epithelium cycle. Arrows indicate marking with bromodeoxiuridine. Bars: 20 μm.</p

Histological cross-sections of seminiferous tubules showing the eight stages of the seminiferous epithelium cycle in <i>Desmodus rotundus</i>, according to the tubular morphology method.

<p>(a) Stage 1; (b) Stage 2; (c) Stage 3; (d) Stage 4; (e) Stage 5; (f) Stage 6; (g) Stage 7; (h) Stage 8. Sc: Sertoli cell; A: type A spermatogonia; I: intermediate spermatogonia; B: type B spermatogonia; PL-L: primary spermatocyte in preleptotene to leptotene; Z: primary spermatocyte in zygotene; P: primary spermatocyte in pachytene; D: primary spermatocyte in diplotene; M: metaphase figure; Rs: round spermatid; Es: elongating/elongated spermatid; Rb: residual bodies; L: lumen of seminiferous tubule; →: myoid cell at tunica propria. Bars: 40 μm.</p

Biometric and morphometric data of testicular components in the bat <i>Desmodus rotundus</i>.

<p>Biometric and morphometric data of testicular components in the bat <i>Desmodus rotundus</i>.</p