Amendment 1: The above referenced solicitation is hereby amended to respond to technical questions submitted. The following questions and responses are hereby provided:

1. Question: What is the form of the antigens while shipping?

Response: Antigens will not be provided.

2. Question: How will the antigens be supplied? As purified proteins or will you need peptide antigen design and synthesis?

Response: Antigens will not be provided. NIDA is looking for a company that can identify peptide antigens and synthesize them.  

The due date for quotations remains unchanged.

Original description: The purpose of this requirement is to produce monoclonal and polyclonal KDEL receptor (KDELR) antibodies for each of the subtypes of KDELR (KDELR1, KDELR2, KDELR3) separately. 

Please see the attached Combined Synopsis Solicitation.