100)[011] oriented bcc single crystal is known as a typical sample that deforms homogeneously during cold rolling and hardly recrystallizes. However, deformation bands were confirmed to develop during cold rolling by utilizing dynamic strain aging, which made complete and uniform recrystallization possible. Those deformation bands were observed along the traces of active slip systems by SEM observation. On the assumption that single slip operates locally and produces recrystallization nuclei, recrystallized texture formation is explained that eight kinds of {110}<111> slip cause crystal rotations around eight kinds of <112>, which are perpendicular to both slip plane normal and slip direction. Rotational direction is always towards the direction that makes the angle between slip plane and rolling plane increase, in other words, to cause a local pileup of dislocations. The intensity of each component of recrystallized texture corresponded to Schmid factor of the slip system to which recrystallization of the component is attributable. In addition, by high resolution EBSP, orientation measurement was successfully accomplished for the most parts of the cold rolled sample including deformation bands. Those recrystallization nuclei were found to already exist in the deformation bands after rolling. The presence of recrystallization nuclei in the cold rolled state as minor orientation component was also recognized in X-ray pole figure analysis.