Secret in the White Cell
name: label: Collection Creator
content: Herbert, Don (Donald Jeffry), 1917-2007
setName: label: See more items in
content: Mr. Wizard Papers
label: See more items in
content: Mr. Wizard Papers / Series 8: Audiovisual Materials / 8.2: Moving Image
physdesc: label: Extent
content: 1 Motion picture film (Duration: 11:00., Color, preview print, 16mm)
unitdate: label: Date
content: 1969
container: label: Container
content: Reel OF 1326.9
dataSource: label: Archival Repository
content: Archives Center, National Museum of American History
objectType: label: Type
content: Archival materials
label: Type
content: Moving Images [31983000029553]
label: Type
content: Motion picture films
scopecontent: label: Scope and Contents
content: Copy 1.

Motion pictures made through a phase-contrast microscope by Dr. James Hirsch of Rockefeller University reveal how he discovered the process by which white cells (polymorphonuclear leucocytes) kill microbes in the body. Dr. Zanvil Cohn, Dr. Hirsch's associate, is shown solving the preliminary problem of how to extract granules from the white cell for chemical analysis. Conclusive proof of Dr. Hirsch's theory is furnished by photographs taken by Dr. Dorothea Zucker-Franklin through an electron microscope. The film pictures for the first time how the enzymes in the granules within white cells are released to kill and digest microbes.