Figure 18: The pineapple recognizable under the microscope, with its criss-crossing sharp needle-like fibrous endocarp (A). This material, unlike gout crystals, is larger and not polarizable because it is made of cellulose. Pomegranate seeds are covered by endocarp that smears into vesicular shaped globules (B). The cytoplasm is dense, and nuclei are difficult to discern on light microscopy (C). At 200x magnification, the tomato’s slimy interior endocarp is an acellular starch, which lends itself to the dense background seen on MGG staining (D). Under Pap staining, the tomato’s intracellular vacuoles are ghostly pale lobules within each round cell (E). At high magnification, the orderly cellulose of tomato skin create rigid-appearing lines within the cell walls (F). A: Pineapple, PAP stain, 60x magnification B: Pomegranate, MGG stain, 40x magnification C: Pomegranate, MGG stain, 60x magnification D: Tomato, MGG stain, 20x magnification