Severity can be minimized by using the least severe procedures and sequence of procedures, and by setting humane endpoints, and, in a sequence of experiments, by setting review points and starting with lower severity studies.
PCR products from nematode homogenates were cloned into pGEM-T Easy (Promega), transformed into E. coli XL1-Blue, extracted, amplified and purified according to standard procedures, and sequenced as described below.
We amplified the p17 gag gene (396 nucleotides) and a partial fragment of the gp41 env gene (360 nucleotides) of the HIV genome with nested polymerase chain reaction (PCR) procedures and sequenced them.
Reagents, cloning procedures and sequence information are available upon request.
DB, AF and AC conducted the experimental procedures and sequence analysis.
For each DNA sample, we performed two independent enrichment procedures and sequence runs.
Here we examined replicate metagenomes across varied DNA input amounts, library preparation procedures, and sequencing platforms.
The DNA extraction, genomic amplification, cloning procedures, and sequencing are described in Bittar et al. [ 41].
Further details of the genotyping techniques, quality control (QC) procedures, and sequencing can be found in the Supplementary Information.
However, this estimate is continuously increasing as advances in virus isolation procedures and sequencing methods impact on virus studies.
A number of different iterative sequence alignment procedures and sequence analysis methods were used as previously described 30 including gene context, interaction predictions, domain analysis and phylogenetic tests.
