Something living on colchicine!

[Chromosome Terror]

Hello all,

I just took a flask of colchicine stock solution (0.1M, or about 4%) that 
had been kept at 4 degrees for about a year... and I found "something" 
living on the bottom!
Colchicine is a strong mutagen. The concentration used to arrest cellular 
development at metaphase is a hundred times lower than that in the flask.
I'm amazed some fungi can grow in those conditions!

Nacho de las Heras
Botany Department
University of Reading
Reading RG6 2AS
UK