tissue	type	type2	liver	brain	cerebellum
nerv	-	-	no	yes	yes
pcr	-	-	true	true	false
gen1	miRNA	tRNA	20	13	15
gen2	miRNA	tRNA	40	60	30
gen3	mRNA	ncRNA	100	85	12
gen4	mRNA	ncRNA	85	10	41