Our results showed that the expression levels of adrenoceptor beta 2 (ADRB2), not of adrenoceptor beta 1 (ADRB1), were elevated in tumor tissues when exposed to chronic stress, as stated in previous study (Figure 2A).[12] Further, the expression levels of ADRB2 were significantly higher until 4 weeks after implantation (Figure 2B). This evidence concerns the gene ADRB2 and neoplasm.