True or False: Research facilities using regulated species must register with the USDA.

The statement is true because all research facilities that use regulated species, as defined by the Animal Welfare Act, are required to register with the United States Department of Agriculture (USDA). This includes institutions that conduct research on a wide range of animals, including but not limited to certain mammals, birds, reptiles, and amphibians. The registration process is crucial as it enables the USDA to oversee and ensure compliance with regulations related to the care and use of these animals in research. This oversight is essential for promoting humane treatment and welfare of animals involved in scientific studies.

Other options suggest conditions or limitations that do not align with the broad requirement established by the USDA for any facility using regulated species, regardless of the type of research conducted or the specific animal species involved.