Umar, M.H.

virus spleen r-mulv infection hemopoietic balb /c mice leukemia tissue marrow rauscher mouse cancer study colony r-mulv infection ip injection bone marrow cells bone marrow embryo transplantation injection apoptotic cells hemopoietic colonies hemopoietic cells liver figure neoplastic mesentery experiment apoptotic effect r-mul 4 mg r-mulv inoculation murine r-mul v infection rauscher leukemia virus number particle period monkey ip inoculation disease apoptosi irradiation result animal hamster formation lethally macrophage r-mul v chapter change group cancer res strain electron control balb /c mouse murine leukemia virus transmission death section virus particles suspension blood pseudocolonie rauscher cells pouch griensven occurrence stage apoptotic bodies lymph nodes tumor inoculated cheek syngeneic histological