While in vitro results may not always correlate with in vivo effects, initial characterisation of novel agents is often conducted in appropriate in vitro models.
The results of those studies are conflicting and do not allow a comprehensive characterisation of antiplatelet agent effects on patients with TBI.
He was also involved in two projects that were not viral, the characterisation of the causative agents of psittacosis and Q fever.
Plating the suspected plant extracts and the analyses with standard PCR procedures require couple of days to complete and do not always result in isolation and characterisation of the causative agents (Pérombelon & van der Wolf, 2002).
Once the effectiveness of these agents was established and their extended use in everyday clinical practice was completed, direct comparison with an active control arm other than placebo or IFN (the earlier 'active' arm) was strongly recommended by both physicians and regulatory authorities for better characterisation of the succeeding agents (Kane et al, 2008).
Besides being useful tools in the analysis, understanding and possible treatment of the disease based on findings in histology, biochemistry, molecular biology and behavioural testing, these mouse models have been of help in characterisation of amyloid-imaging agents and have been used for non-invasive phenotyping by multi-tracer positron emission tomography (PET).
and by his characterisation of the ideal agent as someone devoted to a life of benevolence and virtue.
The first corresponds to isolation and characterisation of the pathogenic agent, which needs to be performed systematically.
After the death of a Swiss bat biologist in Finland in 1985 and subsequent characterisation of the causative agent, it became evident that bat rabies in Europe at the time was caused by two different lyssaviruses, EBLV-1 and 2 [ 7, 9].
Attempts to unravel the epidemiology of scrapie have been frustrated by many factors including long incubation periods, lack of host immune response, difficulties associated with isolation and characterisation of the infectious agent, and the challenge of proving that animals which are exposed to natural or experimental infection are truly naive.
