Transmission electron micrograph of desmosomes (macula adherens)in the junctional complex between cells in frog skin. The upper desmosome is cut obliquely and appears much wider than the lower (vertic...

Figure 191 from Chapter 5 (Endoplasmic Reticulum) of 'The Cell, 2nd Ed.' by Don W. Fawcett M.D. A thin section through frog sartorius muscle shows the organization of the sarcoplasmic reticulum in am...

Figure 393 from Chapter 15 (Cytoplasmic Inclusions) of 'The Cell, 2nd Ed.' by Don W. Fawcett M.D. Longitudinal section of frog neuromuscular junction, prepared by rapid freezing with liquid helium fo...

Figure 392 from Chapter 15 (Cytoplasmic Inclusions) of 'The Cell, 2nd Ed.' by Don W. Fawcett M.D. Frog neuromuscular junction, prepared by rapid freezing with liquid helium followed by freeze substit...

Figure 394 from Chapter 15 (Cytoplasmic Inclusions) of 'The Cell, 2nd Ed.' by Don W. Fawcett M.D. "Omega figures" capturing synaptic vesicle exocytosis at the synaptic junction. This event was obser...

Transmission electron micrographs of sections of tadpole oocyte show the potential for exchange between the nucleus and the cytoplasm at the nuclear envelope. Thin filaments that appear to traverse nu...

Transmission electron micrographs. The upper panel shows a section through a frog nucleated erythrocyte. The nucleus is largely filled with heterochromatin which appears to have a fibro-granular stru...