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A unique mechanism of nuclear division in Giardia lamblia involves components of the ventral disk and the nuclear envelope Biocell
Solari,Alberto J.; Rahn,Monica I.; Saura,Alicia; Lujan,Hugo D..
The fine structure of the binucleate, parasitic protist Giardia lamblia during interphase and divisional stages was studied by serial thin sectioning and three-dimensional reconstructions. The earlier sign of nuclear division is the development of a few peripheral areas of densely packed chromatin directly attached to the inner nuclear envelope. An intracytoplasmic sheet of ventral disk components grows from the cell periphery towards one of the nuclei, apparently constricting this nucleus, which becomes located at a ventral bulge. After the basal bodies become duplicated, a full nuclear division occurs in trophozoites, giving two pairs of parent-daughter nuclei. This full division occurs in a dorsal-ventral direction, with the resulting nuclear pairs...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Giardia; Primitive mitosis; Fine structure of mitosis; Protist mitosis; Cell differentiation.
Ano: 2003 URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0327-95452003000300004
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