Charlie Chaplin, one of the greatest actors of all time, was once embroiled in a child custody case. The case, which has been going on for years, has been rumored in homes across the United States, starting in Hollywood. But even after all this, no settlement was reached. Eventually, the court approached the scientists. The most reliable means of diagnosing paternity at that time was to test the blood of the accused. The court ordered the blood tests of Charlie Chaplin, the complainant's mother and the baby at a local laboratory.The court ordered the blood tests of Charlie Chaplin, the complainant's mother and the baby at a local laboratory. At the appointed time, the scientists submitted the blood test report to the court. The report found that the mother's blood group was type-A and the baby's group was type-B. This means that the father's blood group must be either type-B or AB. But Charlie Chaplin's group was type-O.
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Based on the report, the court declared Charlie Chaplin "not the father of the child." As the verdict in this case went in favor of Chaplin, the actor seemed to breathe a sigh of relief. And the one who deserves the biggest thanks for this is the blood group discoverer Nobel laureate scientist Carl Landsteiner. Chaplin's case is just a trivial example. Diagnosing blood groups has made it possible to treat countless dying people, and will continue to do so.All of this is possible because for the man, he is Carl Landsteiner.