79
ISTICS OF THE VARIOUS MALARIA PARASITES
Mannaberg)
| Number of merozoites |
Form of gametocyte |
Alterations in the infected blood-corpuscles |
Relative number of parasites seen in peripheral and visceral blood espectively |
Influence of quinine |
Liability to reappearance of parasite after leaving infective regions |
| 6-12 | A sphere | The red blood corpuscles are little discoloured, and are not materially altered in size; some appear smaller | Parasites seen in peripheral circulation throughout the whole cycle, and in as great numbers as in visceral blood | Causes disappearance of parasite readily | Liability persists for a very long period. |
| 15-20 (often less) | A sphere | The red blood corpuscles are often hypertrophied, and lose colour, it may be completely. Schüffner's dots in deeply stained specimens | Parasites seen in peripheral blood throughout the whole cycle, but not in such large numbers as in visceral blood | Causes disappearance of parasite readily | Liability persists for long period. |
| 6-8 (even more) | A crescent (?) | The red blood-corpuscles shrink often, and are then either darker-stained (copper colour) or may be completely decolorized | An enormously greater number of parasites present in internal organs as compared with peripheral blood The latter part of the cycle takes place in internal organs only | Causes disappearance of parasite less readily | After a few months, less liability to recurrence. |
| 6-8 | A crescent (?) | The red blood-corpuscles shrink frequently, and are dark | Ditto | Ditto | Ditto. |
| 10-12, rarely 15-16 | A crescent | The red blood-corpuscles shrink frequently; they are dark, or may be perfectly colourless | Ditto | Ditto | Ditto |
