polarized cross-section of the young root of the broad bean

[Adalbert]

Hello everybody,
This time the young root of the broad bean taken by
polarised and oblique illumination and Nikon Plan Apo 20x/0.75

Best, ADi

[Adalbert]

3D

[MarkSturtevant]

That is interesting. According to the internet, the bright arms of the + sign are xylem vessels, with their reinforced cell walls. That would be why they are reflective under this kind of lighting.

[Adalbert]

Hi Mark,
Yes, enclosed is a 3D photo in 63x of the lignified cells of the woody part of a young root of a broad bean.

Best, ADi