This was especially vexing to physician and bacteriologist Robert Koch, who, in seeking to culture his bacteria, “bent all his power to attain the desired result by a simple and consistently successful method,” wrote bacteriologist and historian William Bulloch in his 1938 book, The History of Bacteriology. “He attempted to obtain a good medium which was at once sterile, transparent, and solid” and got some results with gelatine.6 But gelatine is easily digested by many microbes and melts at precisely the temperatures at which the disease-causing microbes Koch wanted to study grow best.
圖像加註文字，楊振年認為寵物犬友善婚宴有發展空間。但狗隻准入餐廳新政能為香港餐飲業帶來多大的收入增長？楊振年表示這十分視乎餐廳類型，很難給出預測數字。
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