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  1. 2 days ago · Queuosine (Q) is a naturally occurring modified nucleoside that occurs in the first position of transfer RNA anticodons such as Asp, Asn, His, and Tyr. As eukaryotes lack pathways to synthesize queuine, the Q nucleobase, they must obtain it from their diet or gut microbiota. Previously, we described the effects of queuine on the physiology of the eukaryotic parasite Entamoeba histolytica and ...

  2. Jan 06, 2012 · Double-door autoclaves can be installed so that one side opens into the mycobacteriology laboratory and the other side opens into a disposal area used by the laboratory for disposing of other waste. Validation of the autoclave cycles for effective decontamination of the projected loads is recommended in addition to a regular maintenance and ...