MKI67 and neoplasm: Severe stress, such as prolonged xenograft generation, might contribute to the necrotic cell death observed at the center of the tumor nodule in the CAMSAP3 knockout group, concomitant with a lower ki67 level and an increase in SA‐β‐gal staining and SASP, indicating the regulatory effect of CAMSAP3 on senescence‐associated phenotypes in an in vivo xenograft.