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®.
Bile Esculin Test. In this medium there is bile and esculin. Bile is the selective agent used to separate Streptococcus bovis and enterococci from other streptococci. Esculin is present because only the group D streptococci and enterococci can hydrolyze esculin in the presence of bile salts.1  Any blackening of the medium means Bile-Esculin positive and presumptive identification of group D streptococcus or Enterococcus. Any blackening of the medium means Bile-Esculin positive and presumptive identification of group D streptococcus or Enterococcus. 2  Note, if there is blackening of the medium before 48 hours, it can be recorded as Bile-Esculin positive.