Abstract:THE rccovcry of pure Rh antiscra is usually effected by absorption of the unwanted antibodies froin iiiixturcs of antibodies, leaving the desired oiic behind. For example, the removal of anti-A and anti-B aiitibodics in an anti-Rh serum from an individual of group 0, is brought about either by absorption with group-A and group-B Rh-negative red cells or by neutralization with specific group-A aiid group-B substances. Careful testing is required to ensure the complctc removal of the unwanted antibodies from the… Show more
“…The anti-U for this study was prepared by the elution technique of Vos and Kelsall [16] from CCDee U + cells used to absorb a serum containing anti-c and anti-U. It was diluted 1 in 10 for the initial screening procedure.…”
15 examples of S–s–U– have been recordedin Africans of Rhodesia and the adjacent countries of Malawiand Mozambique. None were found in 1,000 Bantu-speakingNegroes of Natal. The frequencies of S–s–U– phenotypesin the various tribes examined are presented, and two possibleU variants show that the S–s–U+ phenotype may bepresent.
“…The anti-U for this study was prepared by the elution technique of Vos and Kelsall [16] from CCDee U + cells used to absorb a serum containing anti-c and anti-U. It was diluted 1 in 10 for the initial screening procedure.…”
15 examples of S–s–U– have been recordedin Africans of Rhodesia and the adjacent countries of Malawiand Mozambique. None were found in 1,000 Bantu-speakingNegroes of Natal. The frequencies of S–s–U– phenotypesin the various tribes examined are presented, and two possibleU variants show that the S–s–U+ phenotype may bepresent.
“…It was not inactivated by 2-mercaptoethanol, and was not inhibited by group O secretor or non-secretor saliva, by defatted human milk, or by hydatid cyst fluid. An eluate prepared from the patient's washed red cells by Rubin's [7] modifica tion of Vos and Kelsall's [12] ether elution technique reacted exceptionally strongly, and to a higher titer than the free antibody in the serum (table II). In tests against a selected panel of extensively typed red cells the reactions paralleled those obtained with the serum, showing no reaction with U-negative or Rhnuii red cells.…”
A case of warm antibody auto-immune hemolytic anemia is described
in which the serum antibody, and an eluate from the patient’s red cells, both had
anti-U specificity. The antibody did not react with Rhnun red cells, and gave
weaker reactions with —D— red cells than with other U-positive red cells. Five
other anti-U sera were tested in comparative titrations and some of these also
reacted more weakly against -D- red cells than against red cells having common
Rh phenotypes.
“…Several methods have been used with varying degrees of success [2,3,6], A par ticularly productive procedure is R ubin's modification [7] of the ether elution method of Vos and Kelsall [8].…”
A new method is described for eluting antibody from erythrocytes. Sensitised erythrocytes are subjected to ultrasonic waves; elution probably depends on the application both of heat and great mechanical force. It was successfully used to elute human and animal IgG and IgM antibodies and seed agglutinins. By direct application of ultrasound to sensitised erythrocytes the time taken to produce strong eluates ranged from 30 sec for some seed agglutinins to 10 min for IgG anti-D.
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