title: Is there a seasonal variation in oestrogen receptor levels in human breast carcinoma tissues?
abstract: The seasonal variation of the incidence of oestrogen receptor-positive mammary carcinomas was investigated in 556 postmenopausal women. In addition, the seasonal variation in receptor concentration in 289 oestrogen receptor-positive breast carcinomas was studied. Neither the proportion of oestrogen receptor-positive carcinomas, nor the concentration of the receptor in the tumours, varied significantly during the year.
mesh_terms: D001943:Breast Neoplasms / Q000032:analysis*; D005260:Female; D006801:Humans; D008593:Menopause; D011960:Receptors, Estrogen / Q000032:analysis*; D012621:Seasons
chemical_list: D011960:Receptors, Estrogen