TY - RPRT TI - Coding versus intron variability: extremely polymorphic HLA-DRB1 exons are flanked by specific composite microsatellites, even in distant populations. AU - C Epplen AU - E J Santos AU - J F Guerreiro AU - P van Helden AU - J T Epplen PY - 1997 DO - 10.1007/s004390050379 UR - https://pubmed.ncbi.nlm.nih.gov/9050930/ ID - 9050930 ER -