Refers to the position opposite the operculum.
First larval stage of the acanthocephala which hatches from
The ventral sucker of a fluke, used as a hold-fast organelle.
In the acquisition of nutrients, molecules are accumulated
against a concentration gradient and transported' across the
cell membrane by a carrier in an energy-yielding metabolic
reaction, used by certain protozoan cells.
Wing like structures often seen as cuticular expansions on
A pernicious condition seen with P. falciparum where the
gastrointestinal tract and other abdominal viscera are
overwhelmed by enormous numbers of parasites causing
The alternate occurrence of asexual and sexual
reproduction in the life cycle of an organism.
The nonflagellated form of organisms belonging to the
Irypanosomatidae also called a Leishman-Donovan (L-0)
The development of a protozoan in the anterior portion of the
intestine or salivary glands of its insect host.
A combination of structures, polar rings; conoids,
micronemes; micropores, subpellicular tubules, and
rhoptries, etc. seen in certain developmental stages of the
An early form of the trophozoite, most often seen in
P. falciparu , which appears as a delicate layer of cytoplasm
with a protruding dot of chromatin on the margin of an
erythrocyte. Also called accole' form.