Hyaline casts are formed in the absence of cells in the tubular lumen. They have a smooth hyaline cast texture and a refractive index very close to that of the surrounding fluid. Reduced ...

Smooth round dark blue-purple cytoplasmic inclusion May be centrally located or sometimes in the periphery Composed of fragments of DNA Iron stain negative May Resemble: Pappenheimer ...

In direct smears it is difficult to recognize oocysts as they are small (4-6 µm in diameter). Oocysts contain 1-6 dark granules. By focusing up and down, it is possible to see a ...

Eosin methylene blue agar (EMB) is a selective and differential medium used to isolate fecal coliforms. Eosin Y and methylene blue are pH indicator dyes which combine to form a dark ...

Cyst of E. histolytica/E. dispar in an unstained concentrated wet mount of stool. Notice the chromatoid bodies with blunt, rounded ends (arrow).  

Colonies of Staphylococcus aureus on blood agar surrounded by wide zones of beta-hemolysis.