In the present study – the largest study to date investigating CAC in RA – we observed a higher prevalence and extent of CAC in RA patients compared with a geographically compatible population of non-RA controls after CV risk and sociodemographic adjustments.
However, the change in the amount of unexplained difference demonstrates that it can be difficult to find compatible populations at extreme levels of deprivation.
Looking internationally for compatible populations has limited potential because of variation in measures of socioeconomic deprivation and because of diverse historical, economic or structural changes that may have impacted population health differently.
We cannot exclude that geographically distant and chromosomally divergent populations would display reduced fertility if crossed, although they are connected by a chain of compatible populations that should allow gene flow.
Spread of single clones of V. filiformis across more than 100 kilometers was likely facilitated by watering and mowing of the European turfs, but did not lead to the merging of compatible populations even when compatible clones are in populations less than four kilometres apart.
Differential expression and false discovery rate (FDR) analyses comparing populations of pi-L2 (i.e., incompatible population, NL1-RHg to compatible population, TN8) identified 71 genes that were induced in NL1-RHg as compared to TN8.
The factors leading to establishment of the predominantly self-compatible populations, however, are unclear.
Finally, it appears that timber harvest resulting in limited canopy thinning may be compatible with maintaining populations of Western Slimy Salamanders in Missouri.
Klink et al. [ 9- 13] demonstrated that numerous changes in gene expression occur in roots and in syncytial cells in soybean roots infected by either compatible or incompatible populations of soybean cyst nematodes.
Although crosses between the Florencia forms have not been carried out, there is preliminary evidence that the H. cydno cognate morphotype is compatible with other populations of H. cydno, while the Florencia H. m. malleti shows hybrid sterility with H. cydno (Giraldo and Linares, unpub).
