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FIG 4. A, Background-subtracted image profile of a PE-160 tube with the fitted gaussian curve. The calculated gaussian SD was 2.58 for the known inner diameter of 1.14 mm.
B, Background-subtracted image profile of a rabbit ear artery with the fitted gaussian curve. The calculated gaussian SD was 2.58, corresponding to an estimated inner diameter of about 1.14 mm for the ear artery.
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