Delicate ring forms and crescent-shaped gametocytes are the only forms normally observed in the peripheral blood of which Plasmodium spp.?
a. P. vivax
b. P. malariae
c. P. falciparum
d. P. ovale
C
P. falciparum infects young and old red blood cells (RBCs). Development after the ring stage takes place in blood vessels of internal organs. Delicate ring forms and crescent-shaped gameto-cytes are the only forms normally observed in peripheral blood. Gametocytes appear after 7 to 10 days.
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