Image shows adult human fibroblast cells with intracellular proteins involved in adhesion of these cells to an extracellular matrix. Magenta represents actin stress fibers in a cell and green staining.
Two interphase cells with immunofluorescence labeling of actin filaments (purple), microtubules (yellow), and nuclei (green). This image won first place in the Nikon 2003 Small World photo competition. The Cell: An Image Library - Image
Bacteria: E. coli These rod-shaped bacteria are enterobacters, which are part of the normal content of human and animal digestive systems. However, under certain conditions they can cause gastroenteritis and urinary tract infections.