They developed what might be the first cancer vaccine
If by "they" you mean Russia, that's not what your source says. It's a press release about Agenus (a US company) licensing their vaccine for production and sale in Russia.
they have entered into a license, development and manufacturing technology transfer agreement for Agenus' Oncophage® (HSPPC-96; vitespen) vaccine
I don’t think I’m responsible for other adults’ reactions to my life choices or my lived experiences. my suggesting that they or their spouses changing their surnames upon marriage implies some sort of ownership.
Oh well.