A gradual transition between capillary calibers
Wider hairpin capillaries on the left and finer loops on the right.

Image details
- Pattern
- Unequal capillary calibers
- Author or contributor
- Borja Gracia Tello
- Hallmarks
- Unequal capillary calibersSimple hairpin loops
- Magnification
- 250×
- Device
- Smart G-Scope
- Field of view (W × H)
- ≈ 2.27 × 1.28 mm
Teaching point
Precise measurement depends on correct calibration and focus.
Measurements and calibration
For the subset of apices with stable automated measurements, estimated widths span approximately 13–33 µm. These are automated estimates, not manually validated measurements.
Clinical caveat
This image illustrates a visual finding and should be interpreted with acquisition quality, distribution across fingers, clinical context, and serology when relevant.
Use and licensing
Third-party image. Refer to the credits and any image-specific terms of use.
- Creator
- Borja Gracia Tello
Suggested attribution
A gradual transition between capillary calibers — Borja Gracia Tello, via Capillaroscopy.com. CC BY 4.0. Source: https://capillaroscopy.com/en/library/gracia-tello-slender-014/ Licence: https://creativecommons.org/licenses/by/4.0/
If you modify the image, describe your changes and retain any existing modification notices. This licence does not imply endorsement or clear other rights.
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