Jay Doc HistoWeb, University of Kansas
http://www.kumc.edu/instruction/medicine/anatomy/histoweb/
Excellent
pictures and descriptions.
Kimball's biology pages http://users.rcn.com/jkimball.ma.ultranet/BiologyPages/A/AnimalTissues.html
Loyola University Histology Page
http://www.meddean.luc.edu/lumen/MedEd/Histo/frames/histo_frames.html
New Mexico State University: Virtual Pinning
Anatomy and Cell Biology in silico
http://darwin.nmsu.edu/~molbio/cellgame/pin.html
Basic cell anatomy.
MIT: http://web.mit.edu/esgbio/www/cb/cbdir.html
http://web.mit.edu/esgbio/www/cb/org/organelles.html
Online Biology Book/Animals cells and tissues
(excellent pix) http://www.emc.maricopa.edu/faculty/farabee/BIOBK/BioBookAnimalTS.html
University of Delaware Histology http://www.udel.edu/biology/Wags/histopage/histopage.htm
3-D models, labeled illustrations, cell and tissue ultra structure, color
histology images!
University of Texas Media Branch http://cellbio.utmb.edu/microanatomy/
Yahoo: http://dir.yahoo.com/Science/Biology/Cell_Biology