Global Adult Stem Cell Assay Market By Type (Viability/Cytotoxicity , Isolation & Purification , Cell Identification , Proliferation , Differentiation , Function , and Apoptosis), By Application (Regenerative Medicine & Therapy Development , Drug Discovery & Development , and Clinical Research), By Region, and Key Companies - Industry Segment Outlook, Market Assessment, Competition Scenario, Trends and Forecast 2020-2029