In this short technical note the construction and use of a simple micr
otome for sectioning critical point dried (CPD) specimens mounted on s
tubs are outlined. The rigidity of CPD specimens allows for light micr
oscopically controlled sectioning by which the internal structure of p
lant organs or individual cells becomes visible. If compared with cryo
-fracturing, this sectioning technique enables repeated sectioning thr
ough any exactly chosen plane, cell or nucleus of the specimen.