Scientific visitors to TCEI are also welcome, although we request that potential visitors respect our time and ongoing experiments. Under agreement with the PUCP, TCEI staff can help process the necessary applications for research permits with the National Institute for Natural Resources (INRENA), Peru’s wildlife protection agency, for those scientists wishing to carry out studies based on the TCEI area and Tambopata National Reserve. Processing a permit takes usually four to six weeks and the cost varies between US$ 120 and US$ 160 depending on whether the project collects biological specimens. The permits require an academic agreement between the researcher´s institution and the PUCP. TCEI requires a nominal processing fee of $40 for costs involved in submitting the permit application and will provide INRENA and PUCP receipts for these fees to the researchers. An additional export permit is required for those researchers who wish to take biological specimens back to their home institutions; scientists are required to incorporate a tagging system which allows INRENA and TCEI to determine the specimens' location and eventual use, with special concern for genetic material.