Answer:
In 1982 different technique was used to identify the gut microflora. In 1982 clone libraries were used as a template to identify the sequence of the amplified gene of gut microflora. The amplified target gene was having different genes mixture so there are chances to get the wrong sequence result if they are not separated properly.
16S rRNA is conserved in almost all the bacteria so 16S rRNA sequencing is a better technique to identify bacterial species. Therefore the conclusions is different because the technique used in 1982 was more complicated which was having loopholes so the study in 2010 done by characterizing the 16S rRNA sequence is more accurate.