Biomedical subjects
Publications and source records attributed to H Kaita.
Statistical and serological evidence from a large kindred and two unrelated adults indicates that Targett (Tar) is an antigen in the Rh blood group system and that its presence is assocciated with a weak expression of the Rh antigen D. In the numerical notation the Tar antigen is designated Rh40.
Investigation of the inheritance of a 'new' low-incidence red cell antigen (Fra) indicates that it is an autosomal dominant marker and not part of the ABO, MNSs, P, Rh, Kell, Lutheran, Duffy, Kidd, Dombrock or Scianna blood group systems. No genetic linkage was established between 3Fr, the locus governing production of Fra, and any of 21 other markers.
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In a series of 726 random Caucasian adults tested with anti-Coa and anti-Cob allele frequencies were Coa 0.9470, Cob 0.0530. The distribution of Colton phenotypes in 205 children of 57 selected families was in accordance with expectation. A linkage analysis of Co and 26 other loci indicates that Co is not closely linked to AcP1, ABO, AK1, Ch, Do, GLO, Gm, GPT, HLA, Hp, K, Lu, MN, PGM1 or Rh and does not lie between PGD and PGM1 on chromosome 1.
Ongoing linkage studies of red cell antigens and enzymes in many families along with concentration on a large Mennonite kindred segregating for Sc have resulted in lods, recombinant: nonrecombinant counts and multi-point information which support an order with approximate recombination fractions as measured in the male as follows: Fy--.25--PGM1--.20--Sc--less than .05--UMPK--.15--Rh--.20--PGD, with ENO1 close to PGD. The insertion of Sc and UMPK between PGM1 and Rh allows the recognition of double crossing-over between the latter pair; indications are that this is not a rare event in the female. In the male no evidence of double crossing-over was found in the similar distances PGM1--Rh and Sc--PGD in 13 and 19 opportunities respectively.
Linkage analysis of Lu and Se and 31 other loci indicate that Lu:Se are not closely linked to ABO, ACP1, Co, Do, Est.D,Fy, GC, Gm, GLO:HLA, GPT, Inv, Jk,K,MN,P,PGD,PGM1, Rh,Sc, UMPK OR Yt. Lod scores for 18 families informative for Lu:Se gave no evidence for sex differentiation in recombination fraction: theta for males was 0.07, and for females, .08.
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Data are presented which show that the Diego blood groups are not part of the Dombrock or Yt blood group systems and that the locus controlling Di is not closely linked to the loci controlling ABO, Fy, Jk, Kell, MNSs, Rh, Gm, Inv, AcP,ADA, PGD, and UMPK.
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