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*CIL – Cell Image Library accession number. Please use this to reference an image.

CIL:39225*  Cite 
Description

Time lapse movie of the prophase stage during meiosis I in spermatocytes of the Locust Psophus stridulus. This is a historic movie made in the early 40s by Kurt Michel of the Zeiss company in Jena using Zernike's newly invented phase contrast microscope. Several sequences are shown, some proceeding to metaphase. Despite its early date, the movie and the others in the group remain some of the clearest examples of chromosome behavior during meiosis.

Technical Details

The movie was originally recorded on 35mm film, and later transferred to CD format. The text at the beginning of the movie translates approximately as follows: From the microlaboratory of the Carl Zeiss Company, Jena Director: Dr. K. Michel Meiosis in spermatogenesis in the locust Psophus stridulus L Scientific direction, production and filming by Dr. K. Michel Recorded with the phase contrast procedure of Zernike. Meiosis division I Prophase (Duration ca. 2 hr) IWF is the logo of The Institut fur den wissenscaftliche Film (Institute for scientific film located in Goettingen) ----------------------- Based on the 2 hr real time duration, it appears the movie represents an increased speed of ca. 50x. See also: Michel, K. (1941): Die Darstellung von Chromosomen mittels des Phasenkontrastverfahrens. Die Naturwissenschaften 29, 61-62 Michel, K. (1958): Die Reifeteilungen (Meiose) bei der Spermatogenese der Schnarrheuschrecke (Psophus stridulus l.) Institut für den Wissenschaftlichen Film, Göttingen

Biological Sources
NCBI Organism Classification
Psophus stridulus
Cell Type
spermatocyte
Cellular Component
nuclear chromosome
Biological Context
Biological Process
spermatogenesis
Attribution
Names
Kurt Michel
Heinz Gundlach
Citation
Digital Object Identifier (DOI)
doi:10.7295/W9CIL39225
Archival Resource Key (ARK)
ark:/b7295/w9cil39225
Grouping This image is part of a group.
Imaging
Image Type
film
Image Mode
phase contrast microscopy
Parameters Imaged
elastic scattering of photons
Source of Contrast
differences in amount of elastic light scattering
Visualization Methods
visualization of contiguous regions
Data Qualifiers
processed data
Sample Preparation
Methods
living tissue
Relation To Intact Cell
whole mounted tissue
Dimensions
Spatial Axis Image Size Pixel Size
X 720px ——
X 576px ——