These are the gastric pits and each one is lined with a number of different types of cell, producing a separate, important gastric secretion.
它们就是胃小凹，每个胃小凹内衬有许多不同的细胞，产生不同的、重要的胃分泌物。
The cells at the top of the pits produce mucus, which protects the stomach lining against gastric acid.
胃小凹顶部的细胞则产生胃黏液，通过胃膜的保护使胃不受胃酸的伤害。
The cells at the top of the pits produce mucus, which protects the stomach lining against gastric acid.
胃小凹顶部的细胞则产生胃黏液，通过胃膜的保护使胃不受胃酸的伤害。
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