%0 Journal Article %T Chromosome-pairing in trisomic spermatocytes of males with normal or altered karyotypes %A £¿wito¨½ski M %A Stranzinger G %A Basrur PK %A Kenney RM %J Genetics Selection Evolution %D 1991 %I BioMed Central %R 10.1186/1297-9686-23-s1-s206 %U http://www.gsejournal.org/content/23/S1/S206