Since the earliest of times the Great Pyramid of Giza (Arab. Al Jizah) along with its 2 other main pyramids have been considered one of the wonders of the world. We're talking about a society where they didn't have cameras, You didn't see great images.
Patient care  diagnostic tools, tests, procedures. Stool guaiac test. Definition: A test that detects the presence of hidden (occult) blood in the stool. The stool guaiac is the most common form of Fecal Occult Blood test (FOBT) in use today. Brand names include: Hemoccult, Hemoccult SENSA, ColoScreen, ColoScreen-ES, Seracult, and Seracult PlusÂ®.
Stool may be positive for blood in the presence of severe colitis, but grossly bloody stools are unusual. Fecal leukocytes are present in about half of the C difficile colitis cases.