The midguts were also checked for metacyclic
promastigotes to confirm infection.
These forms differentiate to infective metacyclic
trypomastigotes in the hindgut of the bug and are deposited with the feces when the insect feeds on a vertebrate.
cruzi is transmitted to humans primarily through the infected feces of triatomine bugs that contain metacyclic
trypomastigotes (vectorial transmission).
The parasites replicate as promastigotes and develop into infective metacyclic
promastigotes in the sandfly vector, and the infective promastigotes invade the macrophages and differentiate into amastigotes in the mammalian host (2).
Among the problems they solve here are classifying p-groups all of whose non-normal subgroups have normalizers of index p, and computing the number of subgroups of given order in metacyclic
Sand flies are blood feeders and the infectious metacyclic
promastigotes are transmitted during a blood feeding meal.
trypanomastigotes are expelled in feces when the insect is taking a blood meal.
brucei subspecies begun in human infected with metacyclic
forms then differentiate into bloodstream, subcutaneous tissues and lymph (Sternberg 2004).
Fecal material from positive triatomines was inoculated subcutaneously (200 metacyclic
trypomastigotes/g body weight) into groups of five NMRI mice raised at our laboratory facilities ([bar.
This procedure consisted of intraperitoneal injection of a saline dilution of the metacyclic
flagellates into mice.
The mature metacyclic
promastigotes are accumulated in the midgut and foregut.
Members of the genus Leishmania differentiate from proliferative promastigotes in the sandfly vector gut to infective metacyclic
promastigotes in the insect foregut.