Jean Delumeau (1923-2020)

[Notes on an expedition: Jean Massart and the Belgium biological mission to Brazil, 1922-1923].

In 1922, a group of traveling naturalists reached the Brazilian coast, led by Jean Massart, a Belgium. The goal of this mission was to collect specimens for the Brussels herbarium, as recorded in images found in Une mission biologique belge au Brésil, 1922-1923.

Bernard Dwork 1923--1998

Bernard Morris Dwork, “Bernie” to those who had the privilege of knowing him, died on May 9, 1998, just weeks short of his seventyfifth birthday. He is survived by his wife of fifty years, Shirley; his three children, Andrew, Deborah, and Cynthia; his four granddaughters; his brothers Julius and Leo; and his sister, Elaine Chanley. We mention family early in this article, both because it was su...

Carl Djerassi (1923–2015)

Few lives at the top of chemistry and industrial accomplishments in the 20th century have been as remarkable as that of Carl Djerassi, who died in San Francisco on January 30 at the age of 91. To a considerable extent, his life became known as ‘fascinating’, catalyzed by his own portrayal of it. This feature of his persona cannot, and will not, dilute the one major scientifi c contribution he m...

Jean - Paul Fermand and Jean - Claude Brouet

In the majority o f chronic lymphocytic leukemias (CLL), proliferative B lymphocytes are thought to be frozen in vivo at a given maturat ion stage (1). Recently, several studies have emphasized that CLL cells could be driven to different iate into plasma cells in vitro (with or without proliferation) upon t r iggering by mitogens (2, 3, 4) or T cel l -der ived factors (5, 6). Th u s far, howeve...

Walter A. Jacobs, 1923