erythroleukaemia , until now defined by morphological criteria , has been observed in mice infected with several distinct virological entities , including the polycythaemia-inducing strains of friend virus complex ( fv-p ) , the anaemia-inducing strains of friend and rauscher virus complex ( fv-a and rv-a , respectively ) and various helper-independent virus isolates derived from the fv-a or rv-a complexes .
C0023440
erythroleukaemia
C0002871
anaemia