OXB-IR 纤维位于中央灰色物质，上，下丘脑中。
OXB-IR fibers were located in the central gray substance, superior and inferior colliculi.
电镜，淀粉样物质是由原纤维的β-折叠组成。 可见不规则的灰色物质。
By electron microscopy, amyloid is composed of a "beta-pleated sheet" of fibrils, seen here as irregular grey material.
河床内部的灰色和白色物质显示出是沉积物和盐结层。
Gray and white materials within the lake bed are exposed sediments and salt crusts.
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