PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 16929180-1 2006 Mus musculus cyclin B3 is an early meiotic cyclin that is expressed in leptotene and zygotene phases during gametogenesis. leptotene 71-80 cyclin B3 Mus musculus 13-22 12185076-7 2002 The mouse cDNA has allowed us to further localize cyclin B3 mRNA to leptotene and zygotene spermatocytes. leptotene 68-77 cyclin B3 Mus musculus 50-59