Induced cell-reproduction and . Fig. 35.—Excitation of a lymphocyte by the action of choline. No stain. EXCITATION AND PHAGOCYTOSIS 153. Fig. 36.—Excitation of amoeboid movements in a leucocyte by the actionof cadaverine. No stain. Fig. 37.—A leucocyte excited by morphine. The cells granules are stained. EXCITATION AND PHAGOCYTOSIS 155 the number of bacteria ingested were compared withthose phagocytosed in control experiments where noalkaloid was used, it was seen that the excited cellsdid not ingest more germs than usual. Excitation,therefore, does not increase phagocytosis; and we h
Induced cell-reproduction and . Fig. 35.—Excitation of a lymphocyte by the action of choline. No stain. EXCITATION AND PHAGOCYTOSIS 153. Fig. 36.—Excitation of amoeboid movements in a leucocyte by the actionof cadaverine. No stain. Fig. 37.—A leucocyte excited by morphine. The cells granules are stained. EXCITATION AND PHAGOCYTOSIS 155 the number of bacteria ingested were compared withthose phagocytosed in control experiments where noalkaloid was used, it was seen that the excited cellsdid not ingest more germs than usual. Excitation,therefore, does not increase phagocytosis; and we havenoticed that if a mixture of living leucocytes andgerms are mixed and spread on jelly which containsatropine, the cells do not purposely extrude theirpseudopodia in the direction of any bacteria whichmay be near them. On the contrary, if a pseudo-podium happens to strike against a bacterium, thelatter is usually pushed out of the way. Whether leucocytes are excited or not, we havenever seen a cell actually ingest bacteria. We haveoften seen cells with bacteria inside them, but wehave never seen the actual act of ingestion, nor havew
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