18. rnai is a technique that silences genes by targeting them and degrading their mrna. how can this technique be used in scientific laboratories? a. rnai is observed in nature, but it can't be used in laboratories. b. rnai allows scientists to turn off one gene specifically to study its effect. c. rnai has been used in laboratories to make bacteria more susceptible to antibiotics, but has limited application in eukaryotic cells. d. rnai is a powerful tool for degrading mrna, but because it doesn't degrade other types of rna, its use is limited.

this protocol describes a detailed procedure for intracellular flow cytometry staining.

layer 3 is younger than layer 6.

glacial erosion, the picking up and movement of earth beneath a glacier, is also referred to as plucking. erosion and transportation of individual pieces of bedrock, especially large "joint block occur as a result of this glacial erosion. plucking is type of erosion in which rocks become frozen into the bottom and sides of the glacier.as the glacier moves downhill it 'plucks' the rocks frozen into the glacier from the ground.

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