Induced cell-reproduction and . cribed in the next chapter, the leucocytesand the lymphocytes become excited and extrude longpseudopodia. Sometimes these pseudopodia becomedetached from the cells (fig. 26), when the fragmentappears to be identical with a blood-platelet. Theymay contain a few granules derived from the , the blood-platelet is also highly amoeboidunder this excitation; and their amoeboid movementscan easily be seen by this method. Deetjen, severalyears ago, asserted that blood-platelets showed amoeboidmovements, although, of course, he did not employal
Induced cell-reproduction and . cribed in the next chapter, the leucocytesand the lymphocytes become excited and extrude longpseudopodia. Sometimes these pseudopodia becomedetached from the cells (fig. 26), when the fragmentappears to be identical with a blood-platelet. Theymay contain a few granules derived from the , the blood-platelet is also highly amoeboidunder this excitation; and their amoeboid movementscan easily be seen by this method. Deetjen, severalyears ago, asserted that blood-platelets showed amoeboidmovements, although, of course, he did not employalkaloids to excite them. By this method, however,not only can they be readily seen to show movements,but they have also actually been photographed in theact (fig. 27). We have also succeeded in obtaininga negative of a blood-platelet apparently being producedby a leucocyte (fig. 26). As a matter of fact, the plate-lets stained by this method have such a remarkableresemblance to leucocytes that in the very earliest NUCLEATED RED CELLS 125.
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