Laboratory-on-a-chip technology for earlier and quicker diagnosis of a disease is being developed. Lab-on-a-chip has become possible because nanotechnology lets scientists manipulate extremely small materials, on the scale of atoms and molecules. The lab-on-a-chip is a miniaturized, portable version of a blood-count machine. The lab-on-a- chip can be designed for many applications. One example is that it could be a diagnostic tool for cancer detection by searching in blood plasma for certain molecules that could be early indicators of the disease. The handheld device also has advantages since it requires only a little sample of blood to analyze the blood chemistry of a patient. Analyzing the composition of blood is how doctors test for infections and deficiencies in the immune system.
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