41. "' James Francis Tait "'was an English physicist and endocrinologist . 42. To liven up his work, the San Diego endocrinologist tried his hand at drug studies. 43. As he enters puberty, his levels of testosterone are being checked regularly by an endocrinologist . 44. Greenberg is an endocrinologist at the USDA Human Nutrition Research Center at Tufts University in Boston. 45. Hypogonadism is also categorized by endocrinologists by the level of the reproductive system that is defective. 46. In some of these cases a pediatric endocrinologist is consulted to confirm the tentative sex assignment. 47. Hsien-I Chu, a renowned endocrinologist , was the first president of the university. 48. From 1963 to 1973, a leading endocrinologist , Dr . Carl Heller, Washington prisoners. 49. His grandson was Ludwig Haberlandt famed endocrinologist and pioneer in chemical birth control, the pill. 50. William Petit, the sole survivor of the home invasion, is an endocrinologist in Cheshire.