mRNA purification

[Jin Rong Xu]

Hi. I am considering purchase some commercial mRNA isolation kits. But I 	do not which company's kit is the best (cheap and good) for purifying 		mRNA from total RNA. I will be very grateful if you could tell me which	one	is good for my purpose.	          										Thanks a lot.					By the way, is the Promega magnetic mRNA isolation kit good for isolating 	mRNA directly from small quantity of plant tissue.