Endocrine mechanisms underlying reproductive toxicity in the developing rat chronically exposed to dietary lead

agua potable birth weight body length body measurements ciclo estral cycle oestral dosage drinking water eau potable espermatozoo esteroides hormonas sexuales hormone sexuelle hypophyse lead lh madurez sexual mensuration corporelle oestrogens oestrous cycle peso al nacimiento pituitary gland plomb plomo rat rata rats sex hormones sexual maturity spermatogenese spermatogenesis spermatozoa steroids testosteronas testosterone toxicidad toxicity