Using a modified sperm typing protocol , the mutation frequency of the CAG repeat region at the androgen receptor locus has been measured using a rare semen sample from an individual with spinal and bulbar muscular atrophy ( SBMA ) .
using a modified sperm typing protocol , the mutation frequency of the cag repeat region at the androgen receptor locus has been measured using a rare semen sample from an individual with spinal and bulbar muscular atrophy ( sbma ) .
O O O B-cell_type O O O O O O O O B-DNA_domain_or_region I-DNA_domain_or_region I-DNA_domain_or_region O O B-DNA_domain_or_region I-DNA_domain_or_region I-DNA_domain_or_region O O O O O O O O O O O O B-other_name I-other_name I-other_name I-other_name I-other_name O B-other_name O O