estradiol and testosteron: structural formulas.

line diagram drawing font sketch brand text cartoon map circle document plan design presentation pattern artwork floor estradiol testosteron: structural formulas testosterone main male sex hormone major female healthcare medicine hormone medicine estrogen sex reproduction females women sexual issues vector gynecological examination human fertility molecule molecular structure estradiol science chemical formula chemistry chemical research symbol education biology steroids design biochemistry men testosterone strength muscular build lifestyles healthy lifestyle blood digitally generated medical exam males gender stereotypes laboratory physical structure organic metabolism physiology