Differential interference contrast micrograph of a Micrasterias, a type of green alga called a desmid. Each cell is constructed of two semicells which are mirror images of each other. The two semice...

In the contact area between two conjugating cells the tips of the ridges all fuse forming openings between the two cells. TEM taken on 3/4/80 by R. Allen with Hitachi HU11A operating at 75kV. Neg. 8,5...

In a 9-day old culture of stationary phase cells, two or three days post-conjugation, remnants of the previous macronucleus could be found near normal macronuclear bodies. This remnant was identified ...

This is one of four related images of F-pili (conjugative pili encoded by the F plasmid of E. coli) dynamics by live-cell imaging. There are 2 movie (.avi) files and 2 files (.tiff) from the movies. ...

This is one of four related images of F-pili (conjugative pili encoded by the F plasmid of E. coli) dynamics by live-cell imaging. There are 2 movie (.avi) files and 2 files (.tiff) from the movies. ...

This is one of four related images of F-pili (conjugative pili encoded by the F plasmid of E. coli) dynamics by live-cell imaging. There are 2 movie (.avi) files and 2 files (.tiff) from the movies. ...

Conjugating cells come together during or following meiosis and exchange promicronuclei. The cells actually fuse together at ridge tips and openings are formed between the two cells. TEM taken on 6/6/...

This is one of four related images of F-pili (conjugative pili encoded by the F plasmid of E. coli) dynamics by live-cell imaging. There are 2 movie (.avi) files and 2 files (.tiff) from the movies. ...

Like other ciliates P. multimicronucleatum has two morphologically and functionally different nuclei. Shown here is the tiny micronucleus, of which there are four, during interphase of this cell. This...

Tomogram of the immunological synapse between a cytotoxic T lymphocyte (CTL, top) and a target cell (bottom). The microtubule organization centre (MTOC) is polarized to the cell-cell contact site. The...