the sporulation rate of the fusant B_~- were .～. times than that of the parent cells.
the sporulation rate of the fusant B_~- were .～. times than that of the parent cells.
芽孢形成率是亲本的.～.倍。
the sporulation rate of the fusant B_~- were .～. times than that of the parent cells.
芽孢形成率是亲本的.～.倍。