Progressive accumulation of antigen loss variants resulted in a viral preparation with lower immunogenicity after serial passage.
However, cellulase production on lactose occurs at a slower rate and a lower final enzyme yield than on cellulosic materials, and it has also been reported to lead to an enzyme preparation with lower specific activities [ 6].
Its value in comparison with fluorocarbons and new reconstituted surfactant preparations with a lower viscosity has to be studied in the future.
Since these preparations were selected on the basis of their insulin secretory pattern, this is likely to have introduced a bias, and thus the gene expression pattern described by us may not reflect that of islet preparations with a lower insulin secretory capacity.
Indeed, while in a recent trial hylan showed only a trend towards a higher incidence of local adverse reactions compared with placebo, 29 previous studies suggested a doubling risk of local AE with the high MW HA preparation compared with lower MW products, 10 which may be due to peptide contaminants, formaldehyde, or crystal-induced inflammation.
The authors proposed that photodegradation of keratin hydrolysates could be a useful method for the preparation of hydrolysates with lower molecular weight.
The molecular weight distributions showed a stronger shift to smaller molecular weights during enzymatic hydrolysis using a commercial cellulase preparation for cellulose with lower crystallinity.
Poor bowel preparation was also associated with lower adenoma detection (13.2%) compared to non-poor bowel preparation (15.4%) although this was not statistically significant (p = 0.527).
Another meta-analysis 10 found no evidence of a clinically relevant benefit of hylan compared with lower MW HA preparations, and a recent trial concluded to the non-inferiority between another intermediate MW HA and hylan G-F20.
Moreover, for preparation of PEGylated contrast agents, polymers with lower molecular weights could potentially have better contrast properties as behaving like negative contrast agents that should be compared with other similar negative ones.
Thus, we optimized the preparation of pyrosequencing libraries for use with lower input DNA concentrations by including a post-shearing DNA concentration step (see methods).
