One of two types | of

OF
abbr. chem. scient.	Oxygen Free
abbr. el. scient.	Optical Fiber
abbr. IT	Output File; Overflow Flag
abbr. mil.	Objective Force; Opposing Force; Optional Form
abbr. progr. IT	Open File
abbr. sport.	Outfield; Outfielder

genetic material found in | all

ALL
abbr. med.	Acute Lymphoblastic Leukemia

living cells | and

AND
abbr. IT	Logical AND

| many

MOST
abbr. astronaut.	Microvariability and Oscillations of Stars

viruses There are several types | of

OF
abbr. st.exch.	Oppenheimer Funds

| ribonucleic acid | RNA

RNA
abbr. med.	ribonucleic acid

plays important roles | in

in.
abbr. econ.	insurance

protein synthesis and other cell activities