+"13c6" designates [Carbon-13](/wiki/Carbon-13), a rare, stable isotope of [carbon](/wiki/Carbon). This heavier variant serves as a natural tracer, silently revealing pathways in living systems and ancient climates. Its unique signature is vital for understanding complex processes.
+## See also
+- [Isotope](/wiki/Isotope)
+- [NMR](/wiki/NMR)
+- [Stable Isotope](/wiki/Stable_Isotope)
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