tissue	type	type2	liver	brain	lung	cerebellum
nerv	-	-	no	yes	no	yes
pcr	-	-	true	true	false	false
gen1	miRNA	tRNA	20	13	60	15
gen2	miRNA	tRNA	40	60	90	30
gen3	mRNA	ncRNA	100	85	10	12
gen4	mRNA	ncRNA	85	10	20	41
