A time lapse experiment of Saccharomyces cerevisiae expressing GFP tagged Clb2. Clb 2 is a cyclin-dependent protein kinase regulator, involving in G2/M transition of mitotic cell cycle and positively ...

A time lapse experiment of Saccharomyces cerevisiae expressing GFP tagged Clb2. Clb 2 is a cyclin-dependent protein kinase regulator, involving in G2/M transition of mitotic cell cycle and positively ...

Image of normal human iiver parenchymal cells, where peroxisomes are stained brown with DAB by their catalase activity at pH 10.5. No counterstain was used. Prefixation was carried out in buffered for...

Bright-field image of human iiver parenchymal cells, where peroxisomes are stained dark brown with DAB by their catalase activity at pH 10.5, and postosmicated. Cell nuclei are counterstained with lig...

Low magnification electron micrograph showing peroxisomes in several parenchymal cells in human liver, contrasted by catalase activity with DAB. A few organelles show a heterogeneous content: they are...

Peroxisomes in human parenchymal liver cell, contrasted for catalase activity. Reaction product typically differs between individual organelles. Several mitochondria are seen, as well as many dark gl...

A myoneme of Opercularia coarctata. Such fibrous bundles are known to be composed of centrin, a filament that contracts when exposed to calcium. The ER is closely associated with the myonemes and send...

High resolution image of a myoneme of Opercularia coarctata. Such fibrous bundles are known to be composed of centrin, a filament that contracts when exposed to calcium. The ER is closely associated w...

Human duodenal epithelium, at the level of the crypt. Fixation was carried out inbuffered formal-calcium. Peroxisomes are stained with DAB by their catalase activity at pH 10.5, postosmicated and embe...

Elongated peroxisomes in duodenal epithelial cells. Varying between persons, rounded or elongated peroxisomes are observed. They also vary between epithelial cells on the villus and in the crypt. See:...