. Microbes & toxins. Bacteriology; Toxins; Antitoxins. 196 MICROBES AND TOXINS The antibodies quoted may themselves give rise to antibodies : anticomplements and anti-immune bodies may be prepared. We know now all the factors which come into play in the phenomena of immunity : on the one hand cells, the phagocytes ; on the other the body fluids, containing ferments the actions of which supplement each other, the immune body and the com- plements ; we know also that the experiments of bacteriolysis and haemolysis in vitro appear to indicate that the chief phenomena of immunity are independe
. Microbes & toxins. Bacteriology; Toxins; Antitoxins. 196 MICROBES AND TOXINS The antibodies quoted may themselves give rise to antibodies : anticomplements and anti-immune bodies may be prepared. We know now all the factors which come into play in the phenomena of immunity : on the one hand cells, the phagocytes ; on the other the body fluids, containing ferments the actions of which supplement each other, the immune body and the com- plements ; we know also that the experiments of bacteriolysis and haemolysis in vitro appear to indicate that the chief phenomena of immunity are independent of the phagocytic cells. Let us now examine the problem more closely and see if phagocytosis stands the test brought against it by the humoral theories. Phagocytic Immunity In every case in which the body possesses immunity the bacteria against which immunity exists are devoured by the phagocytes, which collect in crowds, incorporate, and digest them. " Looked at from this standpoint immunity becomes a phenomenon much more general than a mere resistance of the body to infectious ; On ultimate examination it reduces itself to h,cli a phenomenon of cellular suscepti- bility, of chemio- tactic influences, and of intracellular digestion, Immu- nity is a phenome- non of digestion. Phagocytosis can be directly observed in many cases of natural immunity: the disease of Daphnia presents one of the simplest and most typical examples, and similar ones have been observed among other invertebrates. Among the vertebrates the frog owes. 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 Burnet, Etienne, 1873-1960; Broquet, Charles; Scott, William Macdonald. London, W. Heinemann
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectantitox, bookyear1912
