Justin Marie Jolly
Encyclopedia
Justin Marie Jolly was a French hematologist and histologist born in Melun
, Seine-et-Marne
. He was a pioneer in the field of hematology as it pertained to the study of living tissue
.
He studied medicine at the Collège de France
under Louis-Antoine Ranvier
(1835-1922) and Louis-Charles Malassez
(1842-1909) where he learned histological
techniques and their correlation to other medical disciplines. He was chef du laboratoire at the medical clinic in the Hôtel-Dieu de Paris
, and director of the histological laboratory at the École des Hautes Etudes. From 1925 to 1940 he was a professor at the Collège de France.
In the early part of the 20th century he produced the earliest films of mitosis
in living cells via "microscopic movies". In 1923 he published an influential textbook on hemotology called Traité technique d'hématologie. Along with American physiologist William Henry Howell
(1860-1945), the Howell-Jolly bodies
are named; which are 1-2 µm granules seen in erythrocytes (red-blood cells).
Melun
Melun is a commune in the Seine-et-Marne department in the Île-de-France region in north-central France. Located in the south-eastern suburbs of Paris, Melun is the capital of the department, as the seat of an arrondissement...
, Seine-et-Marne
Seine-et-Marne
Seine-et-Marne is a French department, named after the Seine and Marne rivers, and located in the Île-de-France region.- History:Seine-et-Marne is one of the original 83 departments, created on March 4, 1790 during the French Revolution in application of the law of December 22, 1789...
. He was a pioneer in the field of hematology as it pertained to the study of living tissue
Tissue (biology)
Tissue is a cellular organizational level intermediate between cells and a complete organism. A tissue is an ensemble of cells, not necessarily identical, but from the same origin, that together carry out a specific function. These are called tissues because of their identical functioning...
.
He studied medicine at the Collège de France
Collège de France
The Collège de France is a higher education and research establishment located in Paris, France, in the 5th arrondissement, or Latin Quarter, across the street from the historical campus of La Sorbonne at the intersection of Rue Saint-Jacques and Rue des Écoles...
under Louis-Antoine Ranvier
Louis-Antoine Ranvier
Louis-Antoine Ranvier was a French physician, pathologist, anatomist and histologist, who discovered nodes of Ranvier, regularly spaced constrictions of the myelin sheath, occurying at varying intervals along the length of a nerve fiber.Ranvier was born and studied medicine at Lyon, graduating in...
(1835-1922) and Louis-Charles Malassez
Louis-Charles Malassez
Louis-Charles Malassez was a French anatomist and histologist born in Nevers, department of Nièvre.He studied medicine in Paris, where he worked as an interne from 1867...
(1842-1909) where he learned histological
Histology
Histology is the study of the microscopic anatomy of cells and tissues of plants and animals. It is performed by examining cells and tissues commonly by sectioning and staining; followed by examination under a light microscope or electron microscope...
techniques and their correlation to other medical disciplines. He was chef du laboratoire at the medical clinic in the Hôtel-Dieu de Paris
Hôtel-Dieu de Paris
The Hôtel-Dieu de Paris is regarded as the oldest hospital in the city of Paris, France, and is the most central of the Assistance publique - hôpitaux de Paris hospitals. The hospital is linked to the Faculté de Médecine Paris-Descartes...
, and director of the histological laboratory at the École des Hautes Etudes. From 1925 to 1940 he was a professor at the Collège de France.
In the early part of the 20th century he produced the earliest films of mitosis
Mitosis
Mitosis is the process by which a eukaryotic cell separates the chromosomes in its cell nucleus into two identical sets, in two separate nuclei. It is generally followed immediately by cytokinesis, which divides the nuclei, cytoplasm, organelles and cell membrane into two cells containing roughly...
in living cells via "microscopic movies". In 1923 he published an influential textbook on hemotology called Traité technique d'hématologie. Along with American physiologist William Henry Howell
William Henry Howell
William Henry Howell, Ph.D., M.D., LL.D., Sc.D. was an American physiologist. He pioneered the use of heparin as a blood anti-coagulant....
(1860-1945), the Howell-Jolly bodies
Howell-Jolly body
Howell-Jolly bodies are histopathological findings of basophilic nuclear remnants in circulating erythrocytes. During maturation in the bone marrow erythrocytes normally expel their nuclei, but in some cases a small portion of DNA remains....
are named; which are 1-2 µm granules seen in erythrocytes (red-blood cells).
Partial bibliography
- Sur la formation des globules rouges des mammifères. Comptes rendus de la Société de Biologie, Paris, 1905, 58: 528-531. J.M. Jolly
- Traité technique d'hématologie, 1923