Manufacturer of In vivo Grade Bulk Antibodies Leinco Technologies is a specialty manufacturer of early discovery research products including antibodies, recombinant proteins, ELISA kits, second step reagents and other life sciences products. Leinco has developed proprietary methods for manufacturing In vivo functional grade antibodies with the highest purity standards in the industry. Their In vivo Platinum™ antibodies contain no preservatives or carrier proteins and have the most stringent quality specifications for purity (>98%), endotoxins (< 0.05 EU/mg), and aggregates.