Studies on Haptoglobin. IV

Immunological and Biochemical Studies on Serum Haptoglobin

Antibody to purified type 1-1 human serum haptoglobin was obtained in rabbits. Using this antiserum it was demonstrated that the antigenic determinants of the haptoglobin molecule reside in both alpha- and beta-chains. No immunological difference between the normal alpha(1F)- and alpha(1S)-chains of haptoglobin could be detected. A number of healthy individuals whose haptoglobin pattern appeare...

Studies on the serum haptoglobin level in hemoglobinemia and its influence on renal excretion of hemoglobin.

JAYLI:’ foiiiid that oti addition of a si ttI1 ai ount of hen og1ohin, rtiin shows weak peroxidase a(tivity with au optiintii around pH 4.4 in sJ)itP of the fact that no 50(11 a(1ivitv ean })e dei oiistiated in either suI)stan(e hv itS( 1f. In later investigations iii association with POlOliOVski he (lemonstrated that a complex l)et\VN9I hemoglobin (Jib) an(l a serum protein is responsible for ...

Studies on Self-Sterility. IV. Selective Fertilization.

INTRODUCTION .................................................................. 346 Discussion of the problem ..................................................... 348 Pollen-tube frequency distributions ............................................. 349 Influence of growth of compatible pollen tubes upon incompatible pollen tubes.. .. 352 SUMMARY AND DISCUSSION ....................................

Structural studies on human type IV collagen.

Type IV collagen was isolated from limited pepsin digests of human placenta by selective salt precipitation at acidic and neutral pH. The native protein was resistant to human skin collagenase but was cleaved by a rat mast cell protease. Molecular sieve chromatography of the reduced and alkylated material separated relatively homogeneous components of molecular weight 140,000 (140K) and 100,000...

Studies on Plasma Protein. IV. Leprosy