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Helen Dean King (September 27, 1869 – March 7, 1955) was an American
biologist A biologist is a scientist who conducts research in biology. Biologists are interested in studying life on Earth, whether it is an individual Cell (biology), cell, a multicellular organism, or a Community (ecology), community of Biological inter ...
. She was involved in breeding the Wistar lab rat, a strain of rats genetically homogeneous albinos intended for use in biological and medical research.


Life and work

Born at
Owego, New York Owego is a town in Tioga County, New York, United States. The population was 18,728 at the 2020 census. The name is derived from the Iroquois word ''Ahwaga'', meaning "where the valley widens". Owego is in the southeastern corner of the cou ...
, she graduated from
Vassar College Vassar College ( ) is a private liberal arts college in Poughkeepsie, New York, United States. Founded in 1861 by Matthew Vassar, it was the second degree-granting institution of higher education for women in the United States, closely follo ...
in 1892, and in 1899 she received her doctorate in
philosophy Philosophy (from , ) is the systematized study of general and fundamental questions, such as those about existence, reason, knowledge, values, mind, and language. Such questions are often posed as problems to be studied or resolved. Some ...
from
Bryn Mawr College Bryn Mawr College ( ; Welsh: ) is a women's liberal arts college in Bryn Mawr, Pennsylvania. Founded as a Quaker institution in 1885, Bryn Mawr is one of the Seven Sister colleges, a group of elite, historically women's colleges in the United St ...
, with a thesis supervised by embryologist and geneticist
Thomas Hunt Morgan Thomas Hunt Morgan (September 25, 1866 – December 4, 1945) was an American evolutionary biologist, geneticist, embryologist, and science author who won the Nobel Prize in Physiology or Medicine in 1933 for discoveries elucidating the role tha ...
. She had majored in morphology. She remained at the College after graduation as a fellow and student assistant in biology from 1897 to 1904.Ogilvie, M. B., & Harvey, J. D. (2000). The biographical dictionary of women in science: Pioneering lives from ancient times to the mid-20th century. New York: Routledge. ISBN 978-0-415-92038-4 King taught
physiology Physiology (; ) is the scientific study of functions and mechanisms in a living system. As a sub-discipline of biology, physiology focuses on how organisms, organ systems, individual organs, cells, and biomolecules carry out the chemical ...
at Miss Baldwin's School, Bryn Mawr, from 1899 to 1907, was research fellow at the
University of Pennsylvania The University of Pennsylvania (also known as Penn or UPenn) is a private research university in Philadelphia. It is the fourth-oldest institution of higher education in the United States and is ranked among the highest-regarded universitie ...
in 1906–08, and served as an assistant in
anatomy Anatomy () is the branch of biology concerned with the study of the structure of organisms and their parts. Anatomy is a branch of natural science that deals with the structural organization of living things. It is an old science, having its ...
in 1908-09. After 1909, she worked at the
Wistar Institute The Wistar Institute () is an independent, nonprofit research institution in biomedical science, with expertise in oncology, immunology, infectious disease and vaccine research. Located on the campus of the University of Pennsylvania, Wistar was ...
, for more than 40 years, first as an assistant and eventually becoming professor of embryology in 1927 and remaining there until her retirement in 1949. She was also an assistant at
Woods Hole Woods Hole is a census-designated place in the town of Falmouth in Barnstable County, Massachusetts, United States. It lies at the extreme southwest corner of Cape Cod, near Martha's Vineyard and the Elizabeth Islands. The population was 781 at ...
,
Massachusetts Massachusetts (Massachusett language, Massachusett: ''Muhsachuweesut assachusett writing systems, məhswatʃəwiːsət'' English: , ), officially the Commonwealth of Massachusetts, is the most populous U.S. state, state in the New England ...
. Her investigations dealt largely with problems of sex determination. King served as vice president of the American Society of Zoologists in 1937, and was associate editor of the ''Journal of Morphology and Physiology'' from 1924 to 1927 and editor of the Wistar Institute's bibliography service from 1922 to 1935. King participated in breeding the
Wistar rat A laboratory rat or lab rat is a brown rat of the subspecies '' Rattus norvegicus domestica'' which is bred and kept for scientific research. While less commonly used for research than mice (see laboratory mouse), rats have served as an importa ...
, a strain of genetically homogeneous albino rats for use in biological and medical research. She died at age 85 on March 7, 1955, in
Philadelphia Philadelphia, often called Philly, is the largest city in the Commonwealth of Pennsylvania, the sixth-largest city in the U.S., the second-largest city in both the Northeast megalopolis and Mid-Atlantic regions after New York City. Sinc ...
, Pennsylvania.


Research

King's scientific research largely focused on studies of inbred rats, and she was particularly interested in human issues while using for this purpose data from meticulous experiments on laboratory rats. Through inbreeding, her rats were almost
homozygous Zygosity (the noun, zygote, is from the Greek "yoked," from "yoke") () is the degree to which both copies of a chromosome or gene have the same genetic sequence. In other words, it is the degree of similarity of the alleles in an organism. Mo ...
to each other, which facilitated research. In later years, she moved her focus to pursue research on gray Norway rats.


Awards

* Ellen Richards Research Prize of the Association to Aid Scientific Research for Women (1932)


Selected publications

* King, Helen Dean. "On the weight of the albino rat at birth and the factors that influence it." ''The Anatomical Record'' 9, no. 3 (1915): 213-231. * King, Helen Dean. "Studies on inbreeding. I. The effects in inbreeding on the growth and variability in the body weight of the albino rat." ''Journal of Experimental Zoology'' 26, no. 1 (1918): 1-54. * King, Helen Dean, and Henry Herbert Donaldson. "Life processes and size of the body and organs of the gray Norway rat during ten generations in captivity." ''American Anatomical Memoirs'' (1929). * King, Helen Dean. "Life processes in gray Norway rats during fourteen years in captivity." ''American Anatomical Memoirs'' (1939).


References


External links

* * {{DEFAULTSORT:King, Helen Dean Vassar College alumni 1869 births 1955 deaths University of Pennsylvania faculty University of Pennsylvania Department of Biology faculty 20th-century American scientists People from Owego, New York American women biologists American physiologists Women physiologists Bryn Mawr College alumni Scientists from New York (state) American women academics 20th-century American women scientists