[ccp4bb] bioassay g-csf

[megha goyal]

we perform bioassay of g-csf using m-nfs-60 cell lines but we do not get
reproducible results. some time a sample fails and on repeating the assay
for same sample it passes. we do not get proper gradation too. can someone
please provide me a protocol for g-csf bioassay that has been successfully
used. please help me.