TY - RPRT TI - Improved screening method for recombinant retrovirus producing clones. AU - M Havenga AU - R Fisher AU - P Hoogerbrugge AU - D Valerio AU - H H van Es PY - 1996 DO - 10.2144/96216bm08 UR - https://pubmed.ncbi.nlm.nih.gov/8969823/ ID - 8969823 ER -