TY - RPRT TI - Retrovirus-encoded transformation-specific polyproteins: expression coordinated with malignant phenotype in cells from different germ layers. AU - A P Chen AU - M Essex AU - J A Shadduck AU - J Y Niederkorn AU - D Albert PY - 1981 DO - 10.1073/pnas.78.6.3915 UR - https://pubmed.ncbi.nlm.nih.gov/6973761/ ID - 6973761 ER -