Nanoformulations of Core–shell Type Hydroxyapatite-coated Gum Acacia with Enhanced Bioactivity and Controlled Drug Delivery for Biomedical ApplicationsVarun Prasath Padmanabhan & Subha Balakrishnan & Ravichandran Kulandaivelu & Sankara Narayanan T. S. N. & Muthukrishnan Lakshmipathy & Suresh Sagadevan & Faruq Mohammad & Hamad A. Al-Lohedan & Suriati Paiman & Won Chun OhPDF6.4 MBEN