stratum use层级使用stratumn.地层；阶层stratum plextiforme cerebelli小脑丛状层, 小脑分子层stratum moleculare hippocampi海马分子层stratum corneum basic protein基底角质层蛋白stratum longitudinale gastris胃肌织膜纵层stratum interolivare lemnisci橄榄间层stratum absence and reversion地层缺失和倒转stratum granulosum epidermidis郎格罕氏层stratum neuronorum piriformium梨状神经元层stratum epithelium pigmentosum色素上皮层stratum interolivary lemniscus橄榄间层丘系