Nuclear ribonucleoprotein particles containing messenger ribonucleic acid.
D000818:Animals; D002286:Carcinoma, Ehrlich Tumor; D002467:Cell Nucleus / Q000032:analysis*; D066298:In Vitro Techniques; D008099:Liver / Q000032:analysis*; D011506:Proteins / Q000032:analysis*; D012333:RNA, Messenger / Q000032:analysis*; D051381:Rats; D014020:Tissue Extracts / Q000032:analysis*
D011506:Proteins; D012333:RNA, Messenger; D014020:Tissue Extracts