Have students explore the 3 typical forms of bacteria using 1 convenient slide. Includes separate smears of bacillus, coccus, and spirillum bacteria. Learning bacteria morphology couldnt be easier! Slide shows Bacillus megaterium (bacillus, Gram positive), Micrococcus luteus (coccus, Gram positive), and Rhodospirillum rubrum (spirillum, Gram negative).