It was a part of the center's World Blood Donor Day celebration held on Wednesday.
[Ads /]
Wesley had to be treated for X-linked severe combined immunodeficiency (XSCID), also known as "bubble boy disease."
When he was just 3 months old, Wesley received life-saving platelets from 71-year-old donor Kazuhiro Ando, who has reportedly made 235 donations at the UCLA center.
"When you see a patient that's alive and well, it makes me so happy," said Ando.
[Ads /]
Wesley spent five months in the hospital as he underwent treatment.
"I'm very grateful and I hope they understand the difference that they make," said Wesley's mother Vanessa Cruz. "They make this donation blindly and selflessly. You never know who needs it."
Meanwhile, Wesley is thriving and will soon start kindergarten.