Modified from Barbero GJ: Recurrent abdominal pain. Pediatrics in Review 4:30, 1982 and from Greenberger NJ: Sorting through nonsurgical causes of acute abdominal pain. Journal of Critical Illness7:1602â1609, 1992.
Early Modern. Antonie van Leeuwenhoek is considered a father of microbiology as he pioneered the use of simple single-lensed microscopes of his own design. In 1676, Anton van Leeuwenhoek, who lived most of his life in Delft, Holland, observed bacteria and other microorganisms using a single-lens microscope of his own design.
MICROBIOLOGY. 1  Small Gram-positive rod. 2  Isolated from environmental sources such as water, sewerage and foodstuffs. 3  Grows on routine media. Micro labs may occasionally confuse as a contaminant, reporting organisms as diphtheroids.  Main human pathogen: Listeria monocytogenes. Other: L. ivanovii (rare)