Since there do not appear to be transporters designed specifically for the entry of most toxic metal species into mammalian cells, it has been postulated that some of these metals gain entry into target cells, through the mechanisms of ionic and/or molecular mimicry, at the site of transporters of essential elements and/or molecules.
In addition, it is postulated that some early monotremes, marsupials, and placentals were semiaquatic or burrowing, as there are multiple mammalian lineages with such habits today.
Accordingly, it has been postulated that some cancers are composed of a heterogeneous collection of cells, only a minority of which are capable of forming new tumors [2].
It has also been postulated that some kava roots were not properly dried, resulting in hepatotoxin contamination.
It was postulated that some might feel embarrassed for not reporting the willingness to take PME [ 61].
Initially it was assumed that all hemicellulose followed the furan pathway, although in the later discussion it is postulated that some might react to give formic acid.
It has been postulated that some high-grade tumours develop from low-grade lesions by accumulating oncogenic traits (Llobet et al, 2009).
In one trial, it was postulated that some tumor responses may have been a consequence of anti-inflammatory activity, rather than anti-tumor activity [ 64].
Moreover, it has been postulated that some CBMs might possess the ability to locally destruct polysaccharide structure (e.g. lower crystallinity in cellulose), thus improving enzyme accessibility [ 8].
