Dna: Methods And Protocols | Ancient

Samples are ground into a fine powder and soaked in EDTA, which chelates calcium and dissolves the bone matrix.

All work must be done in a dedicated "Clean Lab" with HEPA filtration, positive air pressure, and UV sterilization. Researchers wear full-body suits to prevent shedding their own DNA onto the samples. Ancient DNA: Methods and Protocols

If the sample has low endogenous DNA (e.g., 99% of the DNA is from soil bacteria), researchers use "baits"—RNA probes that match the target genome—to "fish out" the human or animal DNA of interest. 5. Bioinformatic Authentication The final step is proving the DNA is actually ancient. Samples are ground into a fine powder and