<prompt> All of the following statements are true regarding human T cell leukemia virus 1 except:It causes adult T cell lymphomaleukaemiaIt has tropism for CD 8 T cellIt has long latent period of about 40 to 60 yearsLeukaemia develop in only 3 to 5 of infected individual  <response>: HTLV1 causes adult T-cell leukemialymphoma ATLL Similar to the human immunodeficiency virus, which causes AIDS, HTLV-1 has tropism for CD4 T cells, and hence this subset of T cells is the major target for neoplastic transformation. A high fraction of the leukemias express the transcription factor Fox P3, a marker of regulatory T cells Tregs that act to suppress immune responses. 