Exhibit 2
JOINT FILING AGREEMENT
In accordance with Rule 13d-1(f) under the Securities Exchange Act of 1934,
as amended, each of the persons named below agrees to the joint filing on
behalf of each of them of a Statement on Schedule 13D (including amendments
thereto) with respect to the common stock, $.001 par value per share, of
Photogen Technologies, Inc., a Nevada corporation, and further agrees that
this Joint Filing Agreement be included as an exhibit to such filings
provided that, as contemplated by Rule 13d-1(f)(1)(ii), no person shall be
responsible for the completeness or accuracy of the information concerning
the other persons making the filing, unless such person knows or has reason
to believe that such information is inaccurate. This Joint Filing Agreement
may be executed in any number of counterparts, all of which taken together
shall constitute one and the same instrument.
Date: February 24, 1998
/s/ Xxxxx Xxxx, Ph.D. /s/ Xxxxxx X. Xxxxxx, Ph.D.
________________________________ ___________________________________
Xxxxx Xxxx, Ph.D. Xxxxxx X. Xxxxxx, Ph.D.
/s/ Xxxxxxx Xxxxx, Ph.D. /s/ Xxxxxxxx Xxxxxxxxx
________________________________ ___________________________________
Xxxxxxx Xxxxx, Ph.D. Xxxxxxxx Xxxxxxxxx
/s/ Xxxxxx X. Xxxxxx /s/ Xxxxxx X. Xxxxxxxxx
________________________________ ___________________________________
Xxxxxx X. Xxxxxx Xxxxxx X. Xxxxxxxxx
/s/ Xxxx X. Xxxxxx /s/ Xxxx X. Xxxxxxx, Ph.D.
________________________________ ___________________________________
Xxxx X. Xxxxxx Xxxx X. Xxxxxxx, Ph.D.
/s/ Xxxxxx X. Xxxxxxxxx, M.D. /s/ Xxxx Xxxxxxxxx
________________________________ ___________________________________
Xxxxxx X. Xxxxxxxxx, M.D. Xxxx Xxxxxxxxx
