Estrogen in the adult male reproductive tract: A review

Table 1 P450 Aromatase in the adult male reproductive system.

Species	Leydig cells	Sertoli cells	Germ cells	Spermatozoa	References
Mouse¹	+		+	+	[49, 74]
Rat¹	+		+	+	[31, 32, 34, 36, 38, 69, 75, 77, 81, 151–154]
Rooster			+	+	[76]
Bear²	+	+	+		[155]
Boar	+				[156]
Ram	+				[157]
Stallion	+	+	+		[158–160]
Bank vole	+	+	+		[79, 161, 162]
Rainbow trout fish	+				[163]
Dogfish shark			+		[164, 165]
Marmoset			+		[151]
Rhesus	+		+		[166]
Human			+	+	[72, 73, 80, 151]

¹ Early work showed only Leydig cells being positive for Aromatase in the adult testis ² Location depended upon the season[155].

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