. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 66 FREDERIK B. BANG cells are directly involved in clot formation (Yonge, 1926). The presence of this extracellular gel, which seemed fully able to limit bacterial motion in many of the oysters which we examined, may indicate that additional advantage is to be gained from such mechanisms of thrombosis which extend beyond the cell. The possible role of this extracellular material in rendering bacteria more susceptible to phago- cytosis needs further study. The origin of this extracellular gel from the extru- sion of the many
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 66 FREDERIK B. BANG cells are directly involved in clot formation (Yonge, 1926). The presence of this extracellular gel, which seemed fully able to limit bacterial motion in many of the oysters which we examined, may indicate that additional advantage is to be gained from such mechanisms of thrombosis which extend beyond the cell. The possible role of this extracellular material in rendering bacteria more susceptible to phago- cytosis needs further study. The origin of this extracellular gel from the extru- sion of the many cellular granules is an obvious possibility which has not been investigated. Direct observations of the formation of the cellular clot at a point of traumatic rupture of a vessel, the accumulation of great numbers of these cells on the heart when it is exposed to sea water by opening the pericardium, and the accumulation of amebocytes at the cut edge of the adductor muscle, led to the question as to the effect of tissue extracts. It was soon found that a fresh crude sea-water extract of ground gill tissue, when injected directly into the heart, caused a rapid clumping of cells and the tight adherence of these cells to the vessel wall, so that the circula- tion was greatly slowed or stopped. Injection of sea water, of bacterial suspensions, and of carmine, failed to cause similar marked effects. Thrombosis accompanied by phagocytosis was rapidly produced by the injection of certain preparations of. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Marine Biological Laboratory (Woods Hole, Mass. ); Marine Biological Laboratory (Woods Hole, Mass. ). Annual report 1907/08-1952; Lillie, Frank Rattray, 1870-1947; Moore, Carl Richard, 1892-; Redfield, Alfred Clarence, 1890-1983. Woods Hole, Mass. : Marine Biological
Size: 2808px × 890px
Photo credit: © Library Book Collection / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookauthorlilliefrankrat, booksubjectbiology, booksubjectzoology
