And for this reason, we call the genes that code for phosphatases tumor suppressing genes. Now, what happens if both of these genes are for some reason inactivate or for some reason mutated or blocked? So it could be some type of chromosomal abnormality, so a deletion, an insertion, a movement to some other chromosome, and so forth. So when both of these genes in the allele pair and coding for a specific type of phosphatase that inactivates some specific type of molecule in this process are actually knocked out or destroyed, that may lead to tumor formation because the cell will not be able to correctly terminate that process by using these phosphatases. So we know how abnormality can lead to cancer here as well as here. What about this final case?