Stephen W. Paddock - Digital Image Gallery
Islands of Color
Cells in tissue culture exhibit a dazzling array of colors when stained with multiple fluorescent probes and imaged with a confocal laser scanning microscope. The digital image presented above illustrates a cluster of living cells captured with the aid of fluorescent probes and laser scanning confocal microscopy.
Two major classes of cells are prokaryotes and eukaryotes, which are similar in that they both contain DNA, RNA, ribosomes, a similar metabolism, and they are both protected from the outside environment by a thin membrane. Eukaryotes, however, are generally about ten times the size of prokaryotes, and they are also equipped with a nucleus, and membrane-bound organelles that perform specialized functions within the cell.
