Amplicon sequencing of Tara Oceans DNA samples corresponding to size fractions for prokaryotes or protist.

Seawater was filtered from different depths to retain small and large cell sizes (Protists and bacteria Organisms). The DNA was extracted and amplified by PCR.

研究人员从不同深度采集海水样本，经过滤截留不同粒径的细胞（原生生物（Protists）与细菌类生物体）。后续对提取得到的DNA进行聚合酶链式反应（PCR）扩增。