Figure 6From: A Bacillus thuringiensis isolation method utilizing a novel stain, low selection and high throughput produced atypical resultsPhase Contrast Microscopy of sporulated cells of Bt1-33. A) stained preparation of Bt1-33 viewed under Brightfield microscopy, 100x oil immersion, B) Bt1-33 viewed under Phase Contrast microscopy, 100x oil immersion, C) Heat-treated preparation of Bt1-33 showing phase-dark crystals lying slightly lateral and terminal to the spore, Phase Contrast microscopy, 100x oil immersion.Back to article page