Lists the molecular entities present in each sample, together with properties such as deuteration
loop_ _sas_sample_entities.id _sas_sample_entities.sample_id _sas_sample_entities.entity_id _sas_sample_entities.concentration 1 1 BSA 1.2 2 1 LYZ 0.7 3 2 BSA 3.3 3 2 HGF . 3 2 EPO 0.1