Kathryn Cross is the 23-year-old founder of Anja Health, a cord blood startup that supports an easy modern way to freeze stem cells for future disease treatment. As a solo founder, she got accepted to Y Combinator, a startup accelerator in Silicon Valley, in January 2022. After the three-month program, she raised over $4 million from investors, including Alexis Ohanian and others. Anja Health: https://www.anjahealth.com/