Biomedical subjects
Publications and source records attributed to D Wellman.
We report the occurrence of triploid preimplantation embryos following in vitro fertilization (IVF) and intracytoplasmic sperm injection (ICSI) in a woman with two previously-identified triploid conceptuses which spontaneously underwent fetal demise at 10 and 23 weeks' gestation. An error in maternal meiosis II is proposed as the most likely cause.
Arguments for treating racism as an illness or an addiction are critiqued, and it is suggested that such efforts constitute a step backward in the battle against racism and discrimination. Medicalization, rather than being a catalyst for social change, is a mode of social control. The assumptions underlying the disease model are examined, and a strategy is outlined for dealing with racism as a structural phenomenon broader and more complex than personal prejudice and individual pathology.
Distinguishing among there different versions of diversity, the author provides an autobiographical account of a situation in which racial differences were treated as mutually enhancing resources. Drawing on additional historical and contemporary examples, he suggests that American social "borderlands" are sites that encourage and facilitate the flowering of inclusive, multidimensional identifies.
An unusual site of metastasis for mammary carcinoma is presented with an examination of the tumor's histologic and ultrastructural features, as well as its estrogen and progesterone receptor protein content. The importance of careful examination of the tonsillar area is emphasized in this patient in whom the tonsillar metastasis represented the initial indication of breast tumor recurrence. Estrogen and progesterone receptor analyses are utilized both as an aid in identifying the origin of the metastatic tumor focus as well as an aid in selecting therapy.