I was devastated by the loss of my job in March, although I can understand why it occurred.

In fact, I had previously helped train one of the FBI agents who searched my apartment.

I am extremely proud of my service with the government and my efforts to help safeguard public health and protect our country against the scourge of offensive biological warfare.

But I am just as appalled that my experience, knowledge, dedication and service relative to defending the United States against biological warfare has been turned against me in connection with the search for the anthrax killer.

I'm a medical doctor and a biomedical scientist.

As a scientist in the field of biological warfare defense, I have never had any reservations whatsoever about helping the anthrax investigation in any way that I could.

All Americans value the freedom of speech and the freedom of the press, and I believe this is essential for our continued way of life. But with this freedom comes responsibility. That responsibility has been abdicated here by some in the media and some in the government.

Anthrax is a deadly inhalational disease.

After eight months of one of the most intensive public and private investigations in American history, no one - no one - has come up with a shred of evidence that I had anything to do with the anthrax letters. I have never worked with anthrax. I know nothing about this matter.

I am a loyal American, and I love my country.