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  Indian J Med Microbiol
 

Figure 6: Boyde's prism patterns. Pattern 1 prisms are usually small (3–5 μm) with complete circular boundaries. Pattern 2 prisms are small 2–4 μm diameter and are arranged in longitudinal columns from the apex to the cervix. Pattern 2 variants (Patterns 2, 2A and B) Pattern 3 prisms are larger 5–8 μm in diameter, the variants (Pattern 3, 3B and C) differ in the shape of the prism sheath

Figure 6: Boyde's prism patterns. Pattern 1 prisms are usually small (3–5 μm) with complete circular boundaries. Pattern 2 prisms are small 2–4 μm diameter and are arranged in longitudinal columns from the apex to the cervix. Pattern 2 variants (Patterns 2, 2A and B) Pattern 3 prisms are larger 5–8 μm in diameter, the variants (Pattern 3, 3B and C) differ in the shape of the prism sheath