--> Dr. Mohsen M. Ramadan wrote:

----
-> Pollen collected from hives close to these sites should not be offered
for human consumption because of high levels of pyrrolizidine alkaloids
present in the pollen and every part of the plant (even dried parts).
----

Thank you for that information, but you did not mentioned what is the source
of this agent and how it got to the vegetation.
Dr. Mohsen M. Ramadan, can you give us that information if you can ?

Thank you,

Maurice