hyaline cast

Hyaline cast - notice the parallel sides, tubular shape with rounded edge, and colorless appearance

granular cast and red blood cells

Granular cast - similar to a hyaline cast but with noticeable granules throughout
Red blood cells - there are two in this photo towards the right side, notice the biconcave shape

renal epithelial cell

Renal epithelial cell - oval shape, single large nucleus that is eccentrically located