title: Lymphoproliferative diseases of fowl: chromosome breaks caused in lymphocytes by JM-V herpesvirus.
abstract: Chromosome preparations were made of bone marrow cells and peripheral lymphocytes isolated from chicks that developed leukemia following infection with JM-V herpes-virus. Karyotypic analysis revealed a high frequency of chromosome breaks and aneuploidy, as well as some pulverization of chromosomes. The number of chromosome breaks began to increase at 2-3 days post infection, and by 5 days post infection it reached 12.7% of bone marrow cells and 17.2% of peripheral lymphocytes. Similarly, the number of aneuploid metaphase figures increased rapidly and reached 12% of bone marrow cells and 19% of peripheral lymphocytes at 5 days post infection. Some specificity was observed in the chromosomes that were affected.
mesh_terms: D000782:Aneuploidy; D000818:Animals; D001354:Avian Leukosis Virus; D001853:Bone Marrow / Q000648:ultrastructure; D001854:Bone Marrow Cells; D002869:Chromosome Aberrations; D006564:Herpesviridae; D007942:Leukemia, Experimental / Q000209:etiology / Q000235:genetics*; D007945:Leukemia, Lymphoid / Q000235:genetics; D008214:Lymphocytes / Q000648:ultrastructure; D013997:Time Factors