** Longeveron LGVN.O shares rise 6% to $1.23 premarket
** Biotech firm says secured a patent in China covering tests that measure the strength and quality of its stem cell products, expanding its global patent protection
** The patent, valid through 2041, covers potency tests for mesenchymal stem cells, which are adult stem cells used to help repair tissue and reduce inflammation - LGVN
** Adds that the tests apply to stem cells derived from bone marrow, fat, blood, organs and lab-made stem cells, helping ensure safety and effectiveness of therapies
** Says the patent adds to its international portfolio of 52 patents
** Longeveron’s lead experimental therapy is being tested in Alzheimer’s disease, rare pediatric heart disease and age-related frailty
** As of last close, stock has nearly doubled YTD
(Reporting by Sahil Pandey in Bengaluru)
((Sahil.Pandey@thomsonreuters.com))