后来，阿爸的身体一点点恢复。走路不再外撇，步子也稳当了些。阿嬷坚持让他上学，初中那年，第一次中考没考上。家里经济紧张，学费是一笔负担，阿嬷还是让他复读，希望他能成材。
It is difficult to know exactly when the shift from gelatine to agar occurred. As often happens for scientific breakthroughs, agar was likely adopted incrementally alongside the use of other growth media. In 1913, for example, the first diagnosis of Serratia marcescens as a human pathogen was made by growing it on agar as well as on potatoes.
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