As Dr. Nikiforov's group added more genetic sequences to the ThyroSeq test to create a larger and more
sensitive version of the test, it is now also performing as a «rule - out» test that can tell doctors with a high degree of certainty that a patient does not have cancer.
People with two copies
of one
version of the serotonin transporter gene region 5 - HTTLPR (the long allele, in case you're into doing your own genetic
testing) are less
sensitive to emotional information in the environment than those with one or two copies
of the short allele.