they are not only eluted specifically , together with snrnp particles , from anti-2,2,7-trimethylguanosine immunoaffinity columns by 7-methylguanosine , they also cofractionate with u5 snrnp during chromatography and , most importantly , in glycerol gradient centrifugation .
C0142661
snrnp particles
C0147543
u5 snrnp