{"in": ["the sample (plasma, , cell suspension)"], "out": ""}
{"in": [], "out": "heparinized blood.1 ml medium"}
{"in": ["heparinized blood.1 ml medium"], "out": ""}
{"in": [""], "out": "a plasma sample"}
{"in": ["18.5% HCl"], "out": ""}
{"in": ["a plasma sample"], "out": "step A7"}
{"in": ["step A7"], "out": "the CHCl3"}
{"in": ["this CHCl3-phase"], "out": ""}
{"in": ["the CHCl3"], "out": ""}
{"in": ["samples"], "out": ""}
{"in": [], "out": "S1P"}
{"in": ["S1P"], "out": "quantitative analysis"}