SEM on cauline and rosette leaves

[VARNUM at MOLBIO.UOREGON.EDU]

I am about to embark upon a series of SEM experiments but would first like 
to ask whether anyone has observed a difference between the epidermal cell 
layer of cauline and rosette leaves?  Any information would be appreciated.
                                   Susan Varnum
                                   varnum at molbio.uoregon.edu