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THE MEASUREMENT OF THE DIAMETER OF ERYTHROCYTES. V.—The Relation of the Diameter to the Thickness
Author(s) -
Ponder Eric
Publication year - 1930
Publication title -
quarterly journal of experimental physiology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.925
H-Index - 101
eISSN - 1469-445X
pISSN - 0370-2901
DOI - 10.1113/expphysiol.1930.sp000484
Subject(s) - materials science , plasma , optics , chemistry , analytical chemistry (journal) , composite material , chromatography , physics , quantum mechanics
1. A photographic method is described for measuring the thickness of erythrocytes suspended in serum or plasma. 2. Results of measurements of diameter, greatest thickness, least thickness, etc., are given for the red cells of man, rabbit, and sheep. The figures obtained indicate that the ratio of length to greatest thickness, and of length to least thickness are quite different in the three species of animals examined, and also that, in any one animal, there is quite a low correlation (about 0.4) between the length of the cell and its greatest or least thickness. 3. The thickness of a cell in a rouleau is considerably less than that of the cell floating freely in plasma (1.7 µ It instead of 2.4 µ), while the diameter is slightly greater (about 8.8 µ instead of 8.6 µ).