Sentence examples for brain samples was limited from inspiring English sources

Although our number of brain samples was limited, it was in the same range as the original study who found a positive correlation with TMEM106B expression in 25 brains (Van Deerlin et al., 2010).

However, collection of a large number of human brain samples is limited by ethical and practical reasons.

Large-scale gene expression profiling of human brain samples is limited by the frequently poor quality of preserved material, and inconsistencies between specimens in term of tissue dissection and preservation, factors which may have contributed to inconsistent or discrepant results in efforts to replicate gene expression profiling studies of neuropsychiatric phenotypes (9, 16– 16).

The number of human samples was limited.

Acquisition of research samples was limited to routine sampling procedures.

Core samples are limited and are expensive.

Variation in the sample was limited.

The sample was limited to 72 participants.

CMD sampling is limited to the interstitial tissue area around the catheter, thus measuring regional brain metabolism.

The concentration of inorganic Hg in the brain samples was below the quantifiable limit of the assay (7 ng/mL) in 8 of 17 MeHg-exposed monkeys.

Both models are plausible and although our subjects are from a longitudinal study, the brain samples are cross sectional which limits our ability to assess pathways and causality.