Metagenome of: human upper respiratory tract
DNA extraction was performed using the QIAamp DNA Microbiome Kit (Catalog No. 51704) according to the manufacturer's protocol. Following extraction, the DNA concentration was assessed with a Qubit fluorometer (ng/L), and purity was evaluated using a Nanodrop spectrophotometer (A260/280 and A260/230 ratios). Library preparation was conducted using the QIAseq FX DNA Library Preparation Kit