For a dependent node that is related to its parent with a multiple {0..n} cardinality, it applies this pattern
对于一个与其亲节点具有 {0..n}关系的依赖节点来说，它应用此模式
Unlike common amino acids, the preparation of these N-protected precursors requires rather elaborate synthetic schemes typically starting from the parent heterocycles.
与普通的氨基酸不同，这些N 段保护前体的准备需要更加复杂的合成方案，典型的合成从母链开始。
A mutant, TS-N-121 was obtained by mutation and plate screening from a parent strain Mycobacterium fortuitum MF2 , which could transform sterol into androstanedione as the main product.
从雄甾二酮的转化产生菌偶发分枝杆菌MF2出发，经紫外诱变结合平板筛选，获得一株主要转化生产睾酮的突变株T S-N-1 21。
A mutant, TS-N-121 was obtained by mutation and plate screening from a parent strain Mycobacterium fortuitum MF2 , which could transform sterol into androstanedione as the main product.
从雄甾二酮的转化产生菌偶发分枝杆菌MF2出发，经紫外诱变结合平板筛选，获得一株主要转化生产睾酮的突变株T S-N-1 21。
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