TY - RPRT TI - Electron microscopic observations on multiple polyoma virus-related particles. AU - C F Mattern AU - K K Takemoto AU - A M DeLeva PY - 1967 DO - 10.1016/0042-6822(67)90288-7 UR - https://pubmed.ncbi.nlm.nih.gov/4291303/ ID - 4291303 ER -