A method of treating the heart and other body tissues by injecting a compound comprised of microsphere encapsulated macromolecule therapeutic agents into the myocardium, such that the microsphere size inhibits capillary transport of the compound but may permit lymphatic transport of the compound, and...http://www.google.com/patents/US6443949?utm_source=gb-gplus-sharePatent US6443949 - Method of drug delivery to interstitial regions of the myocardium
