Leydig cells. Transmission electron micrograph (TEM) of a section through a group of Leydig cells in the intertubular tissue of a testis (testicle). Leydig cells are the principle source of androgens (male sex hormones), specifically testosterone, which stimulates spermatogenesis (sperm development), and by entering the circulation acts upon androgen-dependent tissues elsewhere in the body. The cells contain many mitochondria (dark grey, oval), smooth endoplasmic reticulum and numerous lipid droplets (light grey circles). Magnification: x1100, when printed 10 centimetres wide.
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Creative#:
TOP10393060
Source:
達志影像
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RM
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須由TPG 完整授權
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