The crescent forms of the erythrocyte in normal and pathologic blood expressions : origin of red blood corpuscle and blood plasm / by Frank A. Stahl.

  • Stahl, Frank August, 1862-
Date:
[1887?]
Catalogue details

Licence: Public Domain Mark

Credit: The crescent forms of the erythrocyte in normal and pathologic blood expressions : origin of red blood corpuscle and blood plasm / by Frank A. Stahl. Source: Wellcome Collection.

Provider: This material has been provided by The Royal College of Surgeons of England. The original may be consulted at The Royal College of Surgeons of England.

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    ill Fig'S. 1-2-3, as seen above, the normal ereseent form. Take EinmeFs eiip-shaped erythroblast, minus the base, and a true nor- mal ereseent form is left, as above. Now streteli this ereseent between its liorns and there is left an attentnated figure very mneh like Emmel’s figures seen in his beautiful study of the Siekle-eell Ervthroevte in Prof. Herriek’s, new find, Siekle-eell Aiiwinia, 1910. Tims may be explained, Siekle-eell origin as a form eorresponding fo the normal ereseent type of blood erythro- eyte, as ehanged by the lowered tone of blood eorpiisele different i- ation in the aiicCmias. Snell ehanges are readily seen in illu.strations of the siekle-eell erythroeyte of Siekle-eell Amemia; see Fig. 9 and explanations; both the imeleated and non-niicleated forms of siekle-eell erythro- cytes are there shown. Fig. ().—Plate o. Figs. 42-43-41; the results from experiments with menibranes of ])ig embryo. The same forms of blood eor- puseles oecnr in the ve.ssels of the chorion and in the area vasen- losa in the hiiman ovum at 7-Sth week. Emmel speaks of this tyjie, 43-44, as cnp-shaped erythrocytes; yet their relationship to the pure crescent forms seem very close. They are strikingly similiar in form to that of the Iminaii type seen above in Fig. 4. THK PATHOLOGIC CRESCENT-811 APED ERYTHROCYTE. The deformity of cell changes in the poikyloeytosis of the anae- mias is well known since the time of Nenmann, 1860. Fig. 7.-—i\Iinot and Lee of Harvard present in Nelson's System on Medicine, a remarkable example of pure imeleated crescent form of erythroeyte in a case of Aeipiired ILemolytie Janndiee; Plate 7 (x 1300). It will be noticed that this ereseent tyjie is a duplicate of the normal pure imeleated crescent in Pig. 1, above. Fig. 8.—Buchanan, R. J. M., in Oxford Medical Publication, Liverpool, 1909, affords another such an example of pure nn- eleated ('reseent form oeeiirring in a ease of Mixed Lenkaania. Fig. 9.—Not text but ‘Mllnstration 2—Blood in active phase: stained smear,” taken from Dr. V. P. Sydenstrieker, Angusla, Oeorgia, Siekle-eell Amemia, Jour. Amcr. IMed. Ass., July lo. 1924. Aside from the siekle-eell erythrocytes in this illustration, it shows also a number of other interesting phenomena eorresiiond- Expl.\nations of Figures 7 and 8. Fig. 7.—The pure nucleated crescent form of erythrocyte, pathologic. Minot and Lee. Harvard. From a case of Acquired Haemolytic Jaundice. Fig. 8.—The pure nucleated crescent form of erythrocyte, pathologic; from a case of Mixed Leukaemia. Buchanan, R. ,J. M., Oxford Med. Pub.