English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

A class II antigen beta-chain cDNA clone was isolated from a human B-cell cDNA library by using as a probe the murine I-A beta gene. This cDNA clone, pHA beta, was shown to be distinct from the DC beta- and DR beta-related loci by DNA sequence analysis, thus suggesting that it might correspond to a third polymorphic human class II locus, SB, which encodes secondary B-cell antigens. Genetic mapping of this beta-chain cDNA clone to the SB region was performed by the blot hybridization procedure. We showed that (i) within panels of HLA-DR homozygous human B-cell lines and of unrelated individuals who have been typed for HLA antigens, differential mobility of DNA fragments segregated with distinct SB genotypes; (ii) gamma-ray-induced deletion mutants that have lost the expression of DR or DC/MT antigens but maintain SB expression preserved a pattern consistent with (a) their SB phenotype and (b) the genetic independence of the SB locus with respect to DR and DC/MT; and (iii) within an informative family, two siblings differing only for one allele at the SB locus (because of the occurrence of an internal recombination between DR and GLO) and otherwise HLA identical exhibited a restriction enzyme polymorphism linked to the SB locus. Therefore, all available data are compatible with identity between HA beta and SB beta.

Genetic mapping of a human class II antigen beta-chain cDNA clone to the SB region of the HLA complex.