The NIH Simple Letter Agreement (NIH SLA)
If an MTA is needed, choose the simplest standard agreement that will accomplish the transfer. In 1999, NIH published the Simple Letter MTA template, and has recommended it for transfer of many types of materials. It is accepted by almost all universities. NIH also has two other simple MTAs for different classes of materials, living organisms and human tissues and specimens.
NIH MTA for the Transfer of Organisms
NIH MTA for Human Materials