Figure 6. Age- dependent correlation of HOXA5, PTEN and p53 mRNA expression. (A) mRNA expression levels of HOXA5, PTEN and p53 are downregulated in the old subjects compared to the young cohort. (B) Moderate to strong linear correlations were observed between HOXA5 and PTEN mRNA expression (r = 0.7115) (C) between HOXA5 and p53 mRNA expression (r = 0.6294), and (D) between p53 with PTEN mRNA expression (r = 0.6685). Detection of mRNA expression was performed by qRT-PCR on total cellular RNA prepared from monocytes. Error bars denote SEM (n = 30, average age: 23.0 yrs and 81.1 yrs, respectively).