<prompt> Cell cycle specific anti-cancerous drug is?CyclophosphamideVincristineNitrogen mustardDoxorubicin.  <response>: Ans. b Vincristine. Ref. Harrison Principles of Internal Medicine, 16th ed., 469 Fig. 70.3CYCLE SPECIFIC ANTICANCEROUS DRUGSS-Phase specific drugsM-Phase specific drugsG,Phase specific drugsHydroxyurea,Methotrexate,Dactinomycin,Cytarabine,5-FU,MercaptopurineThiogauanine,ColchicinesVinca alkaloids and taxols e.g., vincristine, vinblastine, paclitaxel.Vinca alkaloids vincristine, vinblastine inhibit mitotic spindle formation while taxels paclitaxel stabilize the mitotic spindles. Thus are known asSpindle poisons.Intercalaters: Anthracyclines and actinomycin D.By crosslinking between adjacent guanine in DNA: Cisplatin.By DNA breakage: Bleomycin. 