In March, Kathleen Hunt unpacked the first shipments of equipment and samples at her new laboratory at Oregon State University’s Marine Mammal Institute in Newport, on the Pacific coast. On empty ...

管内含有尿素底物与酚红酸碱指示剂，专为军团菌尿素酶生化试验设计。培养过程中，若军团菌可合成并分泌尿素酶，便能分解管内尿素底物，生成氨类碱性代谢产物，使培养液整体 pH 值大幅上升，酸性状态下的酚红指示剂转变为玫红色；菌株无尿素酶则无法 ...

Abstract: With the continuous improvement of medical technology, the application of automatic biochemical test technology is more and more extensive, users and the market put forward higher and higher ...

ST. PETERSBURG, Fla. — Inside Johns Hopkins All Children's Hospital, Axl Loughran-Fox crawls across the floor waiting for an appointment to give blood. The 16-month-old boy is happy, but staying ...