The jungle was quiet except for the sound of Nathan collecting the samples. Tissue and hair samples took a few moments each. Bone extractions took about three minutes. Finally all that was left was for the brain samples, still ill at ease despite the calm Nathan powered on the small bonesaw from his medical bag and began cutting open the things skull. 

Maybe six minutes passed with nothing but the hum on the saw against bone, a quick scalpel work later Nathan had the last of the samples.