Different amplification strategies work better than others depending upon the templates, primers, and target sequence in amplification. Unless you know through empirical data you will not know if nested or semi nested primers give the better results. In nested PCR you use outside primers for first round(s) of amplification and inside primers for second round of amplification. In semi-nested PCR you use outside primers for first round(s) and one inside primer and the other previously used outside primer for the second round of amplification.
In nested PCR you use outside primers for first round(s) of amplification and inside primers for second round of amplification. In semi-nested PCR you use outside primers for first round(s) and one inside primer and the other previously used outside primer for the second round of amplification.
In nested PCR you use outside primers for first round(s) of amplification and inside primers for second round of amplification. In semi-nested PCR you use outside primers for first round(s) and one inside primer and the other previously used outside primer for the second round of amplification.
Different amplification strategies work better than others depending upon the templates, primers, and target sequence in amplification. Unless you know through empirical data you will not know if nested or semi nested primers give the better results.