Exhibit 10.13

                     [Applied DNA Sciences, Inc. Letterhead]



                                                       November 2nd, 2004

 Dr. Jun-Jei Sheu, CEO
 Biowell Technology, Inc.
 Chungho City
 Taipei County, Taiwan 235

 Dear Dr. Sheu:

As we push to  uniting  the two  companies  under  the  terms of the  Letter  of
Agreement  dated  August  20th,  2004  between our two  companies,  I thought it
important that we put on hold the license payments until the transaction between
us is completed.  Of course if the transaction between the two companies for any
reason  does not occur,  all accrued  license  fees owing under the terms of the
license  agreement  would be paid in full  within 30 days of  transaction  being
terminated.

If this  acceptable  to you, can you sign below and then fax it back to me at +1
(604) 542-5069.

We are in the  process of  finalizing  a $5  million  raise and as soon as it is
done,  expected to be  completed on December  1st,  2004, I would like for us to
either  come to Taipei or have you come back to USA to put the final  touches on
the transaction uniting the two companies.

Again I look forward to working  with you and will provide all the  assistance I
can to you and our united companies.

WE agree the one with the other to put all  payments  under the license  between
Biowell & Applied DNA on hold pending the  transaction  with the two  companies.
Should the  transaction  not take place all accrued fees will be paid to Biowell
within 30 days of a failed attempt to unite the two companies.

Dated this the 2nd day of November, 2004


/s/ ROB B. HUTCHISON                           /s/ DR. SHEU
    ----------------                               --------
    Rob B. Hutchison, CEO Applied DNA              Dr. Sheu, CEO, Biowell