Sentence examples for been performed previously based from inspiring English sources

A series of analysis about the impact of lead exposure on child mental development have been performed previously based on Krakow cohort [ 28– 30].

There were a total of 7 different K capsule types identified within the forty four ST131 isolates tested, which is in contrast to the vast majority of capsule typing which had been performed previously on E. coli ST131 using PCR based methods and which predominantly identified K2 type capsules via kpsMII primers [ 8, 9].

The two-dimensional protein fractionation has been performed based on the previously described IPAS approach [ 20, 22, 24].

Solution-based panning of the Centocor pIX de-novo Fab libraries was performed based on previously used Centocor de-novo library panning techniques 16.

An MTT assay to test the cytotoxicity of reagents and cell viability was performed as described previously, based on conversion of the yellow tetrazolium salt to the purple formazan product [ 27].

Preparation of single cell cDNAs was performed based on previously published protocols with modifications at several steps (Tang et al., 2009; Tang et al., 2010).

In the lethal toxin (LT) experiments, mortality of mice after a lethal dose of LT was performed based on previously described methods [37].

Phytochemical screening was performed based on previously reported methods [ 7, 8].

An adenovirus neutralization assay was performed based on previously described methods.

Immunohistochemistry for ERK5 expression was performed based on previously described protocol (Gnanapragasam et al, 2003).

These experiments were performed based on previously described methods [ 14, 17].