mature caucasian female scientist pipetting liquid sample into laboratory petri dish - 瓊脂凝膠 個影片檔及 b 捲影像00:29
mature caucasian female scientist transferring liquid sample for microbiology testing - 瓊脂凝膠 個影片檔及 b 捲影像00:23
scientist transferring liquid sample onto petri dish during microbiology research - 瓊脂凝膠 個影片檔及 b 捲影像00:19
scientist transferring liquid culture onto red agar medium in laboratory petri dish - 瓊脂凝膠 個影片檔及 b 捲影像00:16
scientist dispensing liquid sample onto agar in petri dish for microbial cultivation - 瓊脂凝膠 個影片檔及 b 捲影像00:15
close up of doctor doing a micro organism culture of a urine sample in a petri dish - 瓊脂凝膠 個影片檔及 b 捲影像00:21
researching bacterial and algae samples in a petri dish to see how they protect themselves from extreme uv exposure (ntsc pal 4x3 anamorphic; h264 mpeg4 16x9 square) - 瓊脂凝膠 個影片檔及 b 捲影像00:14