. The cell; outlines of general anatomy and physiology. ng 6). As a rule there is only one central corpuscle present in eachlymph cell (Fig. 34); this can be seen without having been stained, since the protoplasm in its im-mediate neighbourhood assumes a distinctlyray-like appearance forming the radiation,or attraction sphere, which later on willoccupy so much of our attention. The cen-tral corpuscle is sometimes situated in anindentation of the nucleus, or, if the latterhas broken down into several pieces, a con-dition which is frequently seen in lymphcells, it lies between them and som
. The cell; outlines of general anatomy and physiology. ng 6). As a rule there is only one central corpuscle present in eachlymph cell (Fig. 34); this can be seen without having been stained, since the protoplasm in its im-mediate neighbourhood assumes a distinctlyray-like appearance forming the radiation,or attraction sphere, which later on willoccupy so much of our attention. The cen-tral corpuscle is sometimes situated in anindentation of the nucleus, or, if the latterhas broken down into several pieces, a con-dition which is frequently seen in lymphcells, it lies between them and some portionor other of the protoplasmic body. In pigment cells (Fig. 35), Solger (II. 38)was able to make out the radiation sphereas a bright spot between the pigment gran-ules, and in consequence he concluded thatthe central corpuscle was present. In the epithelium of the lung, and in theendothelium and connective tissue cells ofthe peritoneum of Salamander larvce ( A, J)), Flemming found, almost withoutexception, that instead of a single central. Fig. 34. — Leucocytefrom the peritoneum of aSalamander larva. Forthe sake of clearness inthe figure, the central cor-puscle, surrounded by itsradiation sphere, has beendistinguished by a brightrinsr, which is not reallypresent in nature. (AfterFlemming, Fig. 5.) ITS CHEMICO-PHVSICAL AND MORPHOLOGICAL PROPERTIES 57 corpuscle, two were present, lyinclose together, either in the im-mediate neighbourhood of theresting nucleus, or in an indenta-tion of it, directly in contactwith the nuclear membrane. Asa rule no radiation sphere was tobe seen in these cases ; some-times the two central corpuscles,instead of touching each otherclosely, were somewhat separatedfrom one another, and underthese circumstances the first com-mencement of a spindle formationbetween them was visible. A
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