THIS NOTE AND THE COMMON SHARES ISSUABLE UPON CONVERSION OF THIS NOTE HAVE NOT BEEN REGISTERED UNDER THE SECURITIES ACT OF 1933, AS AMENDED, OR ANY STATE SECURITIES LAWS. THIS NOTE AND THE COMMON SHARES ISSUABLE UPON CONVERSION OF THIS NOTE MAY NOT BE SOLD, OFFERED FOR SALE, PLEDGED OR HYPOTHECATED IN THE ABSENCE OF AN EFFECTIVE REGISTRATION STATEMENT AS TO THIS NOTE UNDER SAID ACT AND ANY APPLICABLE STATE SECURITIES LAWS OR AN OPINION OF COUNSEL REASONABLY SATISFACTORY TO ICORIA, INC. THAT SUCH REGISTRATION IS NOT REQUIRED.

SECURED CONVERTIBLE TERM NOTE

     FOR VALUE RECEIVED, ICORIA, INC., a Delaware corporation (the “Borrower”), hereby promises to pay to LAURUS MASTER FUND, LTD., c/o M&C Corporate Services Limited, P.O. Box 309 GT, Ugland House, South Church Street, George Town, Grand Cayman, Cayman Islands, Fax: 345-949-8080 (the “Holder”) or its registered assigns or successors in interest, on order, the sum of Five Million Dollars ($5,000,000), together with any accrued and unpaid interest hereon, on October 19, 2007 (the “Maturity Date”) if not sooner paid.

     Capitalized terms used herein without definition shall have the meanings ascribed to such terms in that certain Securities Purchase Agreement dated as of the date hereof between the Borrower and the Holder (as amended, modified or supplemented from time to time, the “Purchase Agreement”).

The following terms shall apply to this Note:

ARTICLE I
INTEREST & AMORTIZATION

     1.1(a) Interest Rate. Subject to Sections 4.11 and 5.6 hereof, interest payable on this Note shall accrue at a rate per annum (the “Interest Rate”) equal to the “prime rate” published in The Wall Street Journal from time to time, plus two and one-half percent (2.50%). The prime rate shall be increased or decreased as the case may be for each increase or decrease in the prime rate in an amount equal to such increase or decrease in the prime rate; each change to be effective as of the day of the change in such rate. Subject to Section 1.1(b) hereof, the Interest Rate shall not be less than seven percent (7.0%). Interest shall be (i) calculated on the basis of a 360 day year, and (ii) payable monthly, in arrears, commencing on November 1, 2004 and on the first business day of each consecutive calendar month thereafter until the Maturity Date (and on the Maturity Date), whether by acceleration or otherwise (each, a “Repayment Date”).

1.1 (b) Interest Rate Adjustment. The Interest Rate shall be calculated on the last business day of each month hereafter until the Maturity Date (each a “Determination Date”) and shall be subject to adjustment as set forth herein. If (i) the Borrower shall have registered the shares of the Borrower’s common stock underlying each of the conversion of the Note and that certain warrant issued to