Microscope
date: label: date made
content: ca 1955
name: label: maker
content: Ernst Leitz
notes: label: Description
content: Inverted compound binocular microscope with rack-and-pinion focus that moves the circular stage up and down, triple nosepiece, and chrome rod holding a “Monla” lamp with iris and condenser. The inscription on the tube reads “Leitz / WETZLAR / GERMANY / 545535.” That on the eye tube reads “Leitz / WETZLAR / Germany.” While the form was designed for use in crystallography, this example was used by Leonard Hayflick (b. 1928), an American microbiologist who, with colleagues at the Wistar Institute in Philadelphia, developed the WI-38 cell strain. Hayflick also developed an oral polio vaccine, and he discovered the “Hayflick Limit” in cell senescence—that is, the number of generations an in vitro cell line can divided before dying off.
label: Location
content: Currently not on view
place: label: place made
content: Germany
topic: label: Subject
content: Science & Scientific Instruments
setName: label: See more items in
content: Medicine and Science: Biological Sciences
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content: Microscopes
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content: Science & Mathematics
creditLine: label: Credit Line
content: Gift of Leonard Hayflick
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: 2007.0011.01
label: catalog number
content: 2007.0011.01
label: accession number
content: 2007.0011
objectType: label: Object Name
content: inverted microscope
physicalDescription: label: Physical Description
content: metal (overall material)
label: Physical Description
content: glass (overall material)
label: Measurements
content: overall: 19 1/32 in x 7 in x 12 3/16 in; 48.33937 cm x 17.78 cm x 30.95625 cm