TY - RPRT TI - Semipermeable aqueous microscapsules. Artificial cells. V. Permeability characteristics. AU - T M Chang AU - M J Poznansky PY - 1968 DO - 10.1002/jbm.820020202 UR - https://pubmed.ncbi.nlm.nih.gov/5707843/ ID - 5707843 ER -