亚洲国产精品成人综合久久久久久久久精品免费看片国产欧美久久久久久精品一区二区三区_成人精品一区二区91毛片不卡_99久久精品无码一区二区毛片免费_亚洲国产成人精品女人久久久国产美女久久久_一本色道久久综合精品免费_久久久久久一级毛片免费野外黑人_免费欧美日韩精品一区二区三区||www.77wy.cn,久久香蕉成人免费大片,亚洲国产成人久久一区久久,4399视频手机在线观看免费,国产精品亚洲综合色区,亚洲欧洲自拍偷线高清一区二区||www.crgt.net.cn ,久久久久成亚洲综合精品,久久久久久无码国产精品中文字幕,国产黄a一级二级三级看三区,91精品国产综合久久久久久,国产欧美日韩精品一区二区三区蜜桃不卡||www.szchenchen.cn ,久久发布国产伦子伦精品,国产高清午夜精品福利色噜,91偷拍一区二区三区精品,日本XXXXX黄区免费看||www.mkznxc.cn

A Petri dish named after the German bacteriologist Julius Richard Petri, is a shallow cylindrical glass or plastic lidded dish that biologists use to culture cells.

Modern Petri dishes usually feature rings and/or slots on their lids and bases so that when stacked, they are less prone to sliding off one another. Multiple dishes can also be incorporated into one plastic container to create a "multi-well plate". While glass Petri dishes may be reused after sterilization (via an autoclave or one hour's dry-heating in a hot-air oven at 160 °C, for example), plastic Petri dishes are often disposed of after experiments where cultures might contaminate each other.

Petri dishes are often used to make agar plates for microbiology studies. The dish is partially filled with warm liquid containing agar and a mixture of specific ingredients that may include nutrients, blood, salts, carbohydrates, dyes, indicators, amino acids or antibiotics.

Once the agar cools and solidifies, the dish is ready to be inoculated ("plated") with a microbe-laden sample. Virus or phage cultures require a two-stage inoculation: after the agar preparation, bacteria are grown in the dish to provide hosts for the viral inoculum.