The practical study of malaria : and other blood parasites / by J.W.W. Stephens and S.R. Christophers.

Date:
1904
Catalogue details

Licence: In copyright

Credit: The practical study of malaria : and other blood parasites / by J.W.W. Stephens and S.R. Christophers. Source: Wellcome Collection.

Provider: This material has been provided by the Royal College of Physicians of Edinburgh. The original may be consulted at the Royal College of Physicians of Edinburgh.

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    it is seen to alter its shape. The diagnosis of a ring from a vacuole is not difficult if the latter is carefully focussed,when it will be found impossible to get a sharp outline as in the parasite, the outline on the contrary ‘ opens out.’ Crenated corpuscles are very frequently taken to be parasites. The crenations focus alternately as dark and bright points, and they have no clear ring outline. Fig. 3U. i. Thin portion of film. a. Thicker portion: (a) a distorted corpuscle with no pigment; (6) a crescent with pigment. 3. Crenated corpuscles. 4. Commencing crenation. 5. (c) Red cells with processes; (d) a male gamete with flagella and pigment. 6. (e) vacuoles; (/) a crack ; {g) a young parasite with very fine pigment; (h) a segmenting parasite with central pigment mass. Isolated platelets in the plasma or lying on a corpuscle appear as little granular masses, but again they have not the opaque white look of parasites nor the definite ring form, nor are they amoeboid. Here, as in the stained specimen, the definiteness of the body should prevent mistakes being made.