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Figure 3
These four fibre diffraction patterns of the breast tissue samples, taken with camera lengths of 600 mm, reveal the four different structures observed with breast carcinoma. (a) The pattern obtained for a typical normal `fibrillar' collagenous breast tissue sample lying parallel to and aligned along a duct. The very wide diffuse ring indicates the presence of fat in this tissue sample. (b) The pattern obtained for normal breast tissue from which all fat has been removed. The fibrillar pattern has not altered. (c) The fibre diffraction pattern obtained for tissues on sections of ducts which were located adjacent to the tumour. Besides the normal fibrillar pattern, a narrow ring which indexed onto a spacing of 32.1 nm is superimposed onto the normal fibrillar pattern obtained from breast tissue. Some samples showed up to five very weak orders of this lattice. A similar pattern is obtained for undifferentiated embryonic foetal tissue. (d) A composite diffraction pattern showing both the ring obtained for foetal tissue and that obtained for foetal-like tissue. Again the fibrillar pattern is the same.

Journal logoJOURNAL OF
SYNCHROTRON
RADIATION
ISSN: 1600-5775
Volume 9| Part 2| February 2002| Pages 71-76
doi:10.1107/S0909049502001504
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