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In the early twentieth century US, Jean Paul Pratt and Edgar Allen conducted clinical experiments on women who had abnormal menstrual cycles. During…
EstrogenEndocrinologyDoisy, Edward Adelbert, 1893-1986MenstruationUterusEdgar Allen identified and outlined the role of female sex hormones and discovered estrogen in the early 1900s in the US. In 1923, Allen, through his…
EstrogenHormones, SexOogenesisEstrusMenstrual CycleMenopause is defined as the point in time exactly twelve months after a female has had her last menstrual period, or shedding of the lining of the…
MenopausePremenopausepostmenopauseEstrogen Replacement TherapyHormone Replacement Therapy, Post-MenopausalKatharina Dorothea Dalton was a physician in England in the twentieth century who defined premenstrual syndrome (PMS) as a cluster of symptoms…
Premenstrual syndromePremenstrual TensionMenstrual CycleMenstruationIn 1953, Raymond Greene and Katharina Dalton, who were doctors in the UK, published The Premenstrual Syndrome in the British Medical Journal. In…
LiteraturePremenstrual syndromeMigraineMenstruationMenstruation disordersImplantation is a process in which a developing embryo, moving as a blastocyst through a uterus, makes contact with the uterine wall and remains…
FetusPregnancyEmbryologyDevelopmental BiologyEmbryos