S
SAPROZOIC
Assimilation of nutrients through the cell membrane by
diffusion.
SCHIZOGONY
The asexual cycle of the class Telosporea (Sporozoa); as
with the asexual cycle of the malarial parasite in the red
blood cells and liver cells of man.
SCHIZONT
A cell undergoing schizogony, in which nuclear divisions
have occurred but maturity does not occur until morozoites
are formed.
SCHUFFNERS DOTS
stippling that occurs on the membrane of erythrocytes
invaded by parasites of Plasmodium vivax and P. ovale
SCLEROTIN
An insoluble highly resistant protein substance which in its
stabilized form is associated with the egg shells of certain
helminths.
SCOLEX
The head region of a tapeworm; where the organs of
attachment are located.
SEXUAL
A reductional division in meiosis causing a change in
REPRODUCTION
chromosomes from diploid to haploid with a subsequent
union of two cells to restore diploidy through the union of
gametes (macrogametes and microgametes).
SLIME BALL
A mass of mucous-covered cercariae of trematodes of the
genus Dicrocoelium which is released by infected terrestrial
snails.
SOL STATE
Referring to the colloidal fluid state (plasmasol) of the
endoplasm within the protozoan cell.
SPARGANOSIS
An infection with the migrating plerocercoid larva of an
unidentified species of the Pseudophyllidea.
SPIRAL GROOVE
A furrow or indentation coursing diagonally along the mid-
body surface of certain flagellates which may be responsible
for their twirling motility.
SPOROBLAST
One of the divisions of the first developmental stages within
the Oocyst of a coccidian; which will ultimately develop into a
sporocyst containing sporozoites.
MD0841
A-18