Precipitation Reaction between Serum and Lysed Erythrocytes

Precipitin reaction between serum and lysed erythrocytes.

The albumin fraction of all normal sera contains a factor which precipitates with part of the normal haemoglobin molecule, the reaction occurring in the proportions of 1 ml. serum to 6 to 15 mg. haemoglobin.

Serum antigens of cattle. IV. Immunogenetics of a soluble antigenic determinant derived from lysed erythrocytes.

This paper describes an allotypic system in cattle called Ec (Erythrocyte cattle). The antigenic determinant is derived from red cells and is detected in lysates by gel precipitation with alloimmune serum. The Ecl specificity is controlled by an autosomal dominant gene and occurs with variable frequencies in different cattle breeds. The Ec system is a very useful genetic marker because the homo...

Chemiluminescence response of peritoneal macrophages to parasitized erythrocytes and lysed erythrocytes from Plasmodium berghei-infected mice.

The chemiluminescence response of normal mouse peritoneal macrophages to parasitized erythrocytes isolated from mice 3 weeks after infection with Plasmodium berghei was examined. Only 4 of 12 animals showed positive responses, whereas 8 showed negative responses. Photomicrographs revealed that only in chemiluminescence-positive animals were parasitized erythrocytes attached to or phagocytized b...

Serum Shock and Serum Reaction

The weak binding reaction between folate and human serum proteins.

New evidence is presented that folic acid in serum binds with low affinity to major serum proteins. This low affinity binding is distinct from the high affinity binding by folate binding protein (FBP), a minor protein which is known to occur in serum with great quantitative variability. These conclusions are based on results obtained by equilibrium dialysis of serum containing only negligible a...