Does anyone in the group have or know of any light- or 
electron-micrographs of immediately post-ovulatory follicles?

What I am after is some indication of the dimensions and shape 
of the ovulatory stigma. Any species will do. 

I need to know what the relationship is between the diameter of 
the expanded oocyte-cumulus complex and the hole it has to get 
through.

TIA

Martin