Table 2.

Aromatase presence in adult male reproductive tract tissues

Species	Tissues	Reference Nos.
Mouse	Whole testis, Leydig cell, immature germ cell, spermatozoa	67, 121, 247, 330, 496, 724
Rat	Whole testis, Leydig cell, immature germ cell, spermatozoa, epididymal epithelium	34a, 78, 85, 86, 110, 238, 239, 282, 328, 329, 377, 388, 404, 405, 528, 533, 545, 551, 591, 630, 681, 686, 687, 688, 692, 699, 734, 735, 736, 744, 760
Dog	Leydig cell, Sertoli cell, immature germ cell	546, 733
Monkey	Immature germ cell, Leydig cell, immature germ cell	545, 692
Human	Immature germ cell, spermatozoa, epithelium of efferent ductule, epithelium of proximal epididymis	22, 24, 54, 93, 94, 111, 114, 117, 323, 382, 383, 384, 572, 600, 639, 692
Bird	Leydig cell, immature germ cell, spermatozoa	226, 378, 698
Fish	Total testis analysis, Leydig cell, immature germ cell	Dogfish (S. acanthias) (60, 156), European sea bass (Dicentrarchus labrax) (75, 160, 250), rainbow trout (Oncorhynchus mykiss) (358), Nile tilapia (Oreochromis niloticus) (357), sea bream (Acanthopagrus schlegelii) (396)
Amphibian	Total testis analysis	376, 510
Turtle	Total testis analysis	245, 552
Bear	Leydig cell, Sertoli cell, immature germ cell	318, 511, 690
Deer	Leydig cell	277
Boar	Leydig cell	145, 146, 149, 150, 224, 467, 732
Bull	Total testis analysis	704
Ram	Total testis analysis, Leydig cell	570, 615, 704
Stallion	Leydig cell, Sertoli cell, immature germ cell, epididymis	14, 193, 282, 288, 399, 400, 643
Bat	Leydig cell, Sertoli cell, germ cells	50
Squirrel	Leydig cell, Sertoli cell, germ cells	412, 567
Bank vole	Leydig cell, Sertoli cell, immature germ cell	68, 223, 362, 616