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Displaying 251 - 275 of 1393 items.

Curt Jacob Stern (1902-1981)

Curt Jacob Stern studied radiation and chromosomes in humans and fruit flies in the United States during the twentieth century. He researched the mechanisms of inheritance and of mitosis, or the process in which the chromosomes in the nucleus of a single cell, called the parent cell, split into identical sets and yield two cells, called daughter cells. Stern worked on the Drosophila melanogaster fruit fly, and he provided early evidence that chromosomes exchange genetic material during cellular reproduction.

Format: Articles

Subject: People

Walter Edward Dandy (1886-1946)

Walter Edward Dandy studied abnormalities in the developing human brain in the United States in the twentieth century. He collaborated with pediatrician Kenneth Blackfan to provide the first clinical description of Dandy-Walker Syndrome, a congenital brain malformation in which the medial part of the brain, called the cerebellar vermis, is absent. Dandy also described the circulation of cerebral spinal fluid, the clear, watery fluid that surrounds and cushions the brain and spinal cord.

Format: Articles

Subject: People

Zhang Lizhu (1921- )

Zhang Lizhu is a Chinese gynecologist and researcher. For most of her career, she worked in the Peking Medical College Third Hospital, renamed in 2000, Peking University Third Hospital. There, she led a team of researchers and physicians in the study of human in vitro fertilization (IVF) and embryo transfer (ET) technology. Zhang and her colleagues contributed to the birth of the first test-tube baby in Mainland China in 1988.

Format: Articles

Subject: People, Reproduction

H. E. Woodward

Format: Photographs

Subject: People

F. C. Waite

Format: Photographs

Subject: People

L. A. Phelps

Format: Photographs

Subject: People

L. Hoadley

Format: Photographs

Subject: People

G. T. Popa

Format: Photographs

Subject: People

C. V. Taylor

Format: Photographs

Subject: People

H. Knower

Format: Photographs

Subject: People

Dixie Pelluet

Format: Photographs

Subject: People

August Krogh

Format: Photographs

Subject: People

W. E. Garry

Format: Photographs

Subject: People

Jack Cattell

Format: Photographs

Subject: People