Georgeanna Seegar Jones (July 6, 1912 – March 26, 2005) was an American reproductive endocrinologist who with her husband, Howard W. Jones, pioneered in vitro fertilization in the United States. Early life She was born July 6, 1912, in Baltimore, Maryland, to J. King Seegar. Her father was a obstetrician, one of the many things that led to Seegar Jones's interest in medicine from a young age. She was raised along with two siblings. She received her bachelor's degree in 1932 from Goucher College and continued to pursue her medical career at Johns Hopkins University School of Medicine. Four years later, 1936, she got her official medical degree (MD). She completed her training as a house gynecology officer and an acting member of the National Cancer Institute. While attending medical school she met her husband, Howard W. Jones, Jr., whom she married in 1940. Reproductive endocrinology was not yet a subspecialty, in fact, her and her husband's accomplishments have contributed to the successful reproductive endocrinology programs that are offered at Johns Hopkins. Career As a resident at Johns Hopkins, she discovered that the common pregnancy hormone, human chorionic gonadotropin, hCG was produced by the placenta, not the pituitary gland as originally thought. Thus leading to the development of the hCG pregnancy test that are currently on the market. By the late 1940's Jones had a copious amount of experience with studying infertility in couples, using endocrinological techniques. At this time, there was no substantial research on endocrinology and the link to infertility so Jones submitted an article of her findings to the American Medical Association titled "Some Newer Aspects of the Management of Infertility". Within this article was the advancements she has made studying the luteal phase defect, a term which Jones is responsible for. In 1949, Jones made the first description of Luteal Phase Dysfunction and is credited to be the first in using progesterone to treat women with a history of miscarriages, thus allowing many of them to not only conceive, but to deliver healthy babies. The pregnanediol technique was developed by Jones along with other Hopkins members. Conclusions drawn from her individual research showed that low progesterone levels lead to low preganediol levels and provide a greater risk for infertility. She became the director of Johns Hopkins' Laboratory of Reproductive Physiology and was the Gynecologist-in-Charge of the hospital's gynecologic endocrinology clinic in 1939. She married Howard W.