Microbiologists have been growing microbes on agar plates for nearly 150 years, but agar’s discovery dates back to a happy accident in a mid-17th-century kitchen. Legend has it that on a cold winter day, a Japanese innkeeper cooked tokoroten soup, a Chinese agar seaweed recipe known in Japan for centuries. After the meal, the innkeeper discarded the leftovers outside and noticed the next morning that the sun had turned the defrosting jelly into a porous mass. Intrigued, the innkeeper was said to have boiled the substance again, reconstituting the jelly. Since this discovery, agar has become a staple in many Japanese desserts, from yokan to anmitsu.
The result from Step 2 is a high-level route – a sequence of shortcuts connecting border points.
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Трамп высказался о непростом решении по Ирану09:14
2 月 27 日，影石创新发布公告，始于2024年3月的美国337调查终裁落定：美国国际贸易委员会（ITC）维持初裁，判定GoPro六项指控均不成立。