CD8A and hepatocellular carcinoma: Additionally, poly(lactic‐coglycolic acid (PLGA)) micro/nanoparticle vaccination combined with anti‐PD1 antibodies and ovalbumin (OVA) has been shown to enhance the activation and proliferation of OVA‐specific CD8+ T cells, suggesting its potential to augment antitumor immune responses in HCC [577].