a, Phase-contrast micrograph of a moth ovarian Sf9 cell 3 d after infection with a baculovirus construct encoding the N-terminal half (containing the motor domain) of CHO1/MKLP1. b, Same cell immunostained for tubulin. Within 3 d of infection, up to 40% of infected cells had extended at least one process, and a portion had extended several. In the process-bearing cells, tubulin staining was concentrated within the processes. Scale bar, 8 μm.