Currently I am faszinated by the roots and rhizome. The picture shows a cross section of Garlic mustard (Alliaria petiolata).

Technical details:
Olympus BX-60
UPlanSAPO 20x oil
Projektiv PE 2,5
Immersionsoil Olympus type F on both sides
Staining: Wacker W3A - classical, three parts
Panorama stack consisting of 6 stacks, approx. 800 pictures.