I saw some radical feminists quoting a “scientific expert" from an article published in an anti-abortion website:

Dr. Joseph Berger has issued a statement saying that from a medical and scientific perspective there is no such thing as a “transgendered" person, and that terms such as “gender expression” and “gender identity" used in the bill are at the very least ambiguous, and are more an emotional appeal than a statement of scientific fact. […] “These are the scientific facts,” Dr. Berger said. “There seems to me to be no medical or scientific reason to grant any special rights or considerations to people who are unhappy with the sex they were born into, or to people who wish to dress in the clothes of the opposite sex.“

If they had researched further, they would have realized that Dr. Joseph Berger is someone who is often quoted by anti-abortion groups, including this same website, to offer “scientific” evidence against abortion.

“In more than 30 years of clinical practice as a psychiatrist, I have not come across an adult woman who, years after having had an abortion, has not had deep regrets, sadness and often a profound sense of loss, especially if she has not had any children,” said Dr. Joseph Berger.

The group that asked Dr. Berger for a “professional" opinion about transgender people is called REAL Women, which may sound like a group of radical feminists who consider trans women to be “fake women,“ but it is actually a conservative lobby group founded in the 1980s to oppose feminists.