Scanning Electron Microscopic Observations on Human Blood Platelets and Their Alterations Induced by Thrombin

Blood cells of the gilthead seabream (Sparus aurata L.): Light and electron microscopic studies

“…Neither glycogen nor dense granules, like those described in other fish were found (Cannon et al, 1980;Savage, 1983;Esteban et al, 1989). By scanning electron microscopy gilthead seabream thrombocytes show a somewhat rugged surface with both crater-like depressions similar to those described in human platelets (Hattori et al, 1969) and finger-like processes distributed throughout the cell surface which correspond to the cell processes observed by transmission electron microscopy. They act to amplify the cell surface area, thus increasing the efficiency of metabolic cellular exchange (Daimon and Uchida, 1978;Daimon et al, 1979;Esteban et al, 1989).…”

A Scanning Electron Microscope Study of the Human Spleen

“…Especially often is a macrophage covered by a rosette of platelets, each one of which is anchored by a pseudopod extended to the cell. Few platelets showed such thickened cell body and warty projections as seen in their viscous transformation (HATTORI et al, 1969). …”

Effect of Bile on Aggregation and Morphology of Rabbit Platelets

“…Barnhart and Riddle (1967) observed that about 70% of dog platelets in vivo , immediately fixed at a time of venipuncture, existed as smooth-surfaced flat discs and ovals. Hattori et al (1969) showed that 78% of the human platelets in plasma after low speed centriguation were disc shaped. In the present study the shapes of rabbit platelets incubated with 0.9% NaCl were smooth-surfaced flat discs or ovals, with or without a few short pods, in about 80% of their population .…”