Omega 3 fatty acids - found in abundance in certain fish, such as salmon, tuna and others, as well as in flax seed oil - are heart healthy dietary lipids. Olive oil is a moâ¦nounsaturated fatty acid which is also a heart healthy dietary lipid.
10 slides per box. A more selective modification of MacConkey medium which is suitable for the detection and enumeration of coliform organisms and also for the detection and isolation of Salmonella and Shigella species occurring in pathological and food specimens.ue to the inclusion of a specially prepared fraction of bile salts in addition to crystal violet, the medium gives improved differentiation between coliforms and non-lactose fermenting organisms whilst Gram-positive cocci are completely inhibited.
There are four species of Shigella: S. boydii, S. dysenteriae, S. flexneri, and S. sonnei. Figure 1. This photograph depicts the colonial morphology displayed by Shigella boydii bacteria cultivated on a Hektoen enteric agar surface.higellosis is spread by fecal-oral contamination, and primates are the hosts. The Shigella toxin affects the small intestine, causing a transduction of fluid into the intestinal lumen and subsequent diarrhea. The diarrhea causes destruction of the epithelial cells of the intestinal mucosa.