EXHIBIT 3
JOINT FILING AGREEMENT
Each of the undersigned hereby acknowledges and agrees, in compliance
with the provisions of Rule 13d-1(k)(1) promulgated under the Securities
Exchange Act of 1934, as amended, that the Schedule 13D to which this Agreement
is attached as an Exhibit (the "Schedule 13D"), and any amendments thereto, will
be filed with the Securities and Exchange Commission jointly on behalf of the
undersigned.
This Agreement may be executed in one or more counterparts.
Dated: July 30, 1999
PERSEUS CAPITAL, LLC
By: /s/ XXXXXXX X. XXXXX
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Name: Xxxxxxx X. Xxxxx
Title: Executive Vice President
PERSEUS MANAGEMENT, LLC
By: /s/ XXXXXXX X. XXXXX
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Name: Xxxxxxx X. Xxxxx
Title: Executive Vice President
PERSEUS, LLC
By: /s/ XXXXXXX X. XXXXX
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Name: Xxxxxxx X. Xxxxx
Title: Executive Vice President
RAPPAHANNOCK INVESTMENT COMPANY
By: /s/ XXXXXXX X. XXXXX
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Name: Xxxxxxx X. Xxxxx
Title: Senior Vice President
CUSIP No. 52728R 102 Page 2 of 2
XX. XXXXX X. XXXXX
By: /s/ XXXXX X. XXXXX
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Name: Xxxxx X. Xxxxx