Memorandum of Agreement

Iowa State University Research Park Corporation

2711 South Loop Drive, Suite 4050

Ames, Iowa 50010-8648

DATE:        January 2, 2014

TO:        Carl Langren

BioProtection Systems Corporation

2503 S. Loop Drive, Suite 5100

Ames, IA 50010

FROM:        Steven T. Carter, President

The following information constitutes additions to the Lease Agreement between ISU Research Park Corporation (Landlord) and BioProtection Systems Corporation (Tenant). Upon signatures of appropriate representatives of Landlord and Tenant affixed to this Memorandum, this Memorandum becomes a part of that Lease Agreement dated August 22, 2005.

Tenant has requested and Landlord agrees to extend the lease for Suite 3900 (±3,147 rsf) in the following manner:

Sq. Ft.        Sq. Ft.        Monthly    Monthly    Annual     Annual

Base        Operating    Base        Operating    Base     Operating

Term        Rents        Rents        Rents        Rents        Rents     Rents

11/1/2013-

10/31/2014    $12.75        Actual        $3,343.69    Actual        $40,124.28    Actual

BioProtection Systems Corp.                                    Exhibit 10.93

Page Two

January 2, 2014

Tenant leases the space as is. Any modifications will be at the Tenant’s sole expense. Landlord agrees to release Tenant from this lease obligation upon Tenant’s move into another facility at the ISU Research Park. Gas & water usage, as well as utility costs for the HVAC system, will be prorated & invoiced monthly. Electricity is metered separately & is invoiced directly from the provider. Subject to the terms of this Memorandum, Tenant agrees that all terms and conditions of the August 22, 2005 Lease and those described in this Memorandum shall remain in force.

Please sign and return both originals to my office by January 3, 2014 if you concur with the above terms. We will then send a fully executed copy for your records.

FOR                            FOR

BioProtection Systems Corp.                ISU Research Park Corporation

/s/ Carl Langren                    /s/ Steve C. Carter                

VP Finance________________            Director_________________________    

Title                            Title

1/2/2014_________________            1/4/2014__________________________    

Date                            Date