a close-up of a hand in protective glove, placing three drops of blood on a microscope slide against a blurred illuminated white table with a test tube rack on it - 瓊脂凝膠 個影片檔及 b 捲影像00:11水滴
a close-up of a hand in protective glove, placing a drop of blood on a microscope slide against a blurred illuminated white table with a test tube rack on it - 瓊脂凝膠 個影片檔及 b 捲影像00:22
a close-up of a hand in protective glove, placing three drops of blood on a microscope slide against an illuminated white table with a test tube rack on it - 瓊脂凝膠 個影片檔及 b 捲影像00:15
a close-up of a hand in protective glove, placing a drop of blood on a microscope slide against an illuminated white table with a test tube rack on it - 瓊脂凝膠 個影片檔及 b 捲影像00:15
a close-up of a hand in protective glove, working with a microscope slide against the illuminated white table with petri dishes on it - 瓊脂凝膠 個影片檔及 b 捲影像00:12細菌
a hand in protective glove puts a petri dish with colorful nutrient agar on a white illuminated table with a lot of colorful petri dishes - 瓊脂凝膠 個影片檔及 b 捲影像00:07細菌
a hand in protective glove takes a petri dish with colorful nutrient agar from a white illuminated table with a lot of colorful petri dishes - 瓊脂凝膠 個影片檔及 b 捲影像00:09細菌