MTSEA Biotin-X 494.70 MW MTSEA Biotin-XX 607.7 MW MTSEA biotin allows the introduction of biotin for biotin/avidin-related studies. The X-linker should facilitatebiotin-avidin interaction.西安凯新生物科技有限公司：带电MTS试剂、中性MTS试剂、自旋标记MTS试剂、荧光标记试剂等MTS试剂。