Topography of the organic components in mother-of pearl.
Topography of the organic components in mother-of pearl.
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DOI：
10.1083/jcb.3.5.797
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发表时间：
1957-09-25
期刊：
影响因子：
--
通讯作者：
GREGOIRE C
中科院分区：
文献类型：
--
作者：
GREGOIRE C
1.地形的有机成分（贝壳）已被调查的积极，postshadow-cast，formvar，和碳复制品的母珍珠从壳的一个Cephalopod，两个腹足类，和6 Pelecypods。所有这些壳的特征是由一个真正的nacrylate内壳层。2.材料包括正常髋臼杯表面、断裂获得的解理碎片以及与髋臼杯内表面相切和横向抛光的表面。这些表面的复制品制备之前和之后蚀刻的分级沉重，诱导的螯合剂（sequestrene NA 2，titriplex III）。腐蚀过程的连续步骤的显微照片已被记录下来。3.在钠长石表面上，有机膜或片被腐蚀暴露出来，在相邻的矿物薄片之间形成连续的结构，并分离成排排列并构成每个薄片的文石晶体。4.材料的层间片表现出网状结构，这在与文石晶体的薄片和板状表面相切取向的制剂中尤其可见。这种花边状结构的模式，在不同的物种研究，出现在同一物种的密切相似，以前报道的小叶彻底脱钙珍珠母，超声波解离。目前的研究结果支持以前的结论，就存在分类学差异Cephalopods，腹足类，Pelecypods在形态组织的有机相内的珍珠母。
1. The topography of the organic components (conchiolin) has been investigated on positive, postshadow-cast, formvar, and carbon replicas of mother-of-pearl from shells of a Cephalopod, of two Gastropods, and of six Pelecypods. All these shells are characterized by a true nacreous inner shell layer. 2. The material included normal shell surfaces, fragments of cleavage obtained by fracture, and surfaces polished tangentially and transversally to the inner surface of the shells. Replicas of these surfaces were prepared before and after etching of graded heaviness, induced by a chelating agent (sequestrene NA 2, titriplex III). Micrographs of the successive steps of the process of corrosion have been recorded. 3. Corrosion unmasked, on the nacreous surfaces, organic membranes or sheets, running as continuous formations in between adjacent mineral lamellae, and separating the individual crystals of aragonite which are aligned in rows and constitute each lamella. 4. The interlamellar sheets of material exhibit a reticulated structure, which is especially visible in preparations orientated tangentially to the lamellae and to the tabular surface of the aragonite crystals. The pattern of this lace-like structure, different in the various species studied, appeared in the same species as closely similar to that reported previously in leaflets of thoroughly decalcified mother-of-pearl, dissociated by ultrasonic waves. The present results support former conclusions with regard to the existence of taxonomic differences between Cephalopods, Gastropods, and Pelecypods in the morphological organization of the organic phase within mother-of-pearl.