Crystalloid nature of mineral deposits in Bowman's capsule of the human glomerulus. Study by X-ray microanalysis and electron microdiffraction.

Abnormal crystalline mineral deposits are often observed in the basement membrane of Bowman's capsule in the human glomerulus. The nature of these deposits has been the subject of much discussion. By means of electron probe microanalysis and electron diffraction techniques, we have identified these abnormal deposits as whitlockite (beta-calcium-orthophosphate).