They have been called a revolutionary research resource for medical advancements.

About$2.5 millionwent to a fertility study.Another projectlooked at how gender hormones affect the gut microbiome of mice.

Again, the mice used for clinical purposes did not undergo gender transition.

WASHINGTON, DC - MARCH 04: U.S. President Donald Trump addresses a joint session of Congress at the U.S. Capitol on March 04, 2025 in Washington, DC. President Trump was expected to address Congress on his early achievements of his presidency and his upcoming legislative agenda. (Photo by Andrew Harnik/Getty Images)

President Donald Trump addresses a joint session of Congress at the U.S. Capitol on March 4, 2025.Andrew Harnik/Getty Images

Because thats what medical researchers do.