$Palatin Tech(NYSE American: PTN), a specialized biopharmaceutical company developing first-in-class medicines based on molecules that modulate the activity of the melanocortin peptide receptor system, today announced two presentations of the Company's melanocortin platform, including PL9643 in dry eye disease, at the Association for Research in Vision and Ophthalmology (ARVO) 2021 Annual Meeting, being held virtually May 1-7, 2021.nologies Inc(PTN.US)$...