Describing procedures

as a function of in the absence and presence of in the absence or presence of analysis was performed results are expressed as results are expressed as the percentage of as part of as determined by in the presence of the presence of in the absence or presence of in the presence or absence of By the addition of carried out as described prepared as described Without the addition of in accordance with as a control for as described by assays were carried out assays were carried out as described assays were carried out using were as follows performed as described performed as described previously prepared as described data not shown results not shown in place followed by