: Fraction of total cellular RNA selected for by an experiment. This includes size fractionation (long versus short) and feature frationation (PolyA-, PolyA+, rRNA-).
Poly(A)- RNA longer than 200 nt
Long PolyA- RNA
Poly(A)+ RNA longer than 200 nt
Long PolyA+ RNA
Total RNA extract (longer than 200 nt)
Total = 3