Five peroxisomes in a liver parenchymal cell are labeled with gold particles for alanine glyoxylate aminotransferase. Several mitochondria are also shown that are unlabeled. Open spaces contained glyc...

Confocal micrograph of Arabidopsis thaliana (thale cress) seedling leaf with stomata (yellow mouth-like structures) and parenchyma cells. Confocal microscopy. Honorable Mention, 2009 Olympus BioScapes...

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...

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...

Peroxisomes proliferating under treatment with nafenopin over 17 days. Reaction product differs between adjacent organelles giving evidence that their content (catalase) is not freely exchanged, as pr...

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...

Normal morphology of two peroxisomes (marked P) in a human liver parenchymal cell. They are contiguous with a narrow endoplasmic reticulum cisterna; this relationship is frequent. The image also shows...

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...

Colorized scanning electron micrograph of a Feverfew (Tanacetum parthenium) stoma. Measuring 20 microns, a stoma (plural stomata) is a pore, found in the leaf and stem epidermis that is used for gas e...