5. Immune System (Discovered in 1901)
<p>The Bible instructs that male babies are to be circumcised on the eighth day (Genesis 17:12). Medical science has now discovered that this is the day that the coagulating factor in the blood, called prothrombin, is the highest. It reaches its peak on the eighth day, then drops. Medical science has also discovered that this is when the human body’s immune system is at its peak.</p>
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<p>Viruses were confirmed as human pathogens in <strong>1901</strong>, with the discovery of theyellow fever virus by <a href="https://www.britannica.com/biography/Walter-Reed">Walter Reed</a>. Immunology made a great advance towards the end of the 19th century, through rapid developments, in the study of humoral immunity and cellular immunity.</p>