NUCLEAR MEMBRANE
The thin outer layer which encloses the nucleoplasm of the
nucleus.
NUCLEOPLASM
The protoplasm which makes up the mass of the nucleus.
NUCLEUS
A spheroid body within a cell characterized by its dense
structure and functioning in a control capacity in reproduction
and other metabolic activities.
O
OBLIGATE PARASITE
An organism that is metabolically dependent on the host.
OOCYST
The cystic form in the Apicomplexa which is the immediate
result of sporogony and will ultimately contain sporozoites.
OOKINETE
The motile, elongated zygote in the life cycle of the
Plasmodium spp.
OOTYPE
An expansion of the uterus of a flatworm which is
surrounded by the Mehlis's glands and into which the oviduct
and seminal receptacle unite allowing fertilization to take
place.
OPERCULUM
A lid-like structure on the egg-shell of certain flukes and
tapeworms through which the larva escapes.
OPISTHOMASTIGOTE
A form of the Trypanosomatidae with the kinetoplast at the
anterior end; with the flagellum passing through a long
reservoir to emerge at the anterior end; without an
undulating membrane.
OVA
A general term for helminth eggs.
P
PAPILLAE
Referring generally to the sensory organs (cephalic and
caudal) extending through the cuticle of the nematodes
that also have taxonomic significance.
PARABASAL B0DY
in certain flagellates, a Golgi body located near the basal
body (kinetosome) which is connected to the basal body by
a filament or fibril.
MD0841
A-14