Michotte Y, Massart D L, Lowenthal A, Knaepen L, Pelsmaekers J, Collard M
J Neurol. 1977 Sep 12;216(2):127-33. doi: 10.1007/BF00312946.
Human choroid plexus was submitted to low temperature ashing (LTA) in order to isolate the calcification. The ashing residue was then subjected to morphological, chemical and structural studies using technics such as scanning electron microscopy, flame and flameless atomic absorption spectrometry, infrared spectrometry and X-ray diffraction. Morphologically, the calcification consisted of wound-up fibers forming granules with a diameter of 0.05 to 0.15 mm. The concretions were identified as cristalline Ca3(PO4)2 and hydroxylapatite. The content of trace elements was high, but within the limits found in other biological apatites. In some cases, however, the Fe content exceeded these limit values.
将人类脉络丛进行低温灰化（LTA）以分离出钙化物质。然后，使用扫描电子显微镜、火焰和无火焰原子吸收光谱法、红外光谱法和X射线衍射等技术对灰化残渣进行形态学、化学和结构研究。在形态学上，钙化物质由缠绕的纤维组成，形成直径为0.05至0.15毫米的颗粒。这些结石被鉴定为结晶状的磷酸钙（Ca3(PO4)2）和羟基磷灰石。微量元素含量较高，但在其他生物磷灰石中发现的范围内。然而，在某些情况下，铁含量超过了这些极限值。
