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||"After reverse transcription and tailing steps, the single cell cDNAs can be amplified. One
representative individual mammalian cell contains about 10 pg of total RNAs, and about 0.1
pg of mRNAs, which usually needs to be amplified around ten million folds to match the
requirement for a standard microarray analysis. Either PCR or IVT can be used for
amplification (primary sources)."