Perhaps the simplest explanation is that LGR5+ ISCs are defined by their crypt location and progenitor cells can regain ISC properties if they enter the LGR5+ niche.
An indepth examination of the crypt localization of β-gal-positive cells revealed that the majority resided in the base of the crypt (79.6%), the stem cell niche and the location of differentiated Paneth cells, while fewer β-gal-positive cells were located in the middle third (17.4%) or the upper third of the crypt (3.0%; Figure 1J).
Villus epithelial cells were identified in unstained specimens based on topographical location; crypt epithelial cells were identified based on topographical location and appearance of granular cytoplasm characteristic of Paneth cells.
To assess the distribution of the proliferative cells along the colonic crypts, a semi-quantitative analysis was performed by counting, on a given section of colon, the number of crypts with proliferative cells in the normal location (crypt base), the number with proliferative cells higher up and those devoid of Ki67-positive cells.
Court documents showed that Michael Jackson's crypt at the Glendale location was priced at $590,000.
7 15 In these mice, bacteria are found in direct contact with the epithelial cells, far down in the colonic crypts and inside enterocytes, locations never observed in wild-type (WT) animals.
The notion that the colon's deep crypt pockets provide a protected location that shields stem cells from potentially toxic substances is widely accepted.
Industrywide, the price of crypts usually differs by their locations within a vertical stack of six or seven.
Methylation patterns are essentially equally different between two adult human crypts regardless of their relative locations.
In the right colon of DBZ-treated mice, only 10% of crypts had Ki67-positive cells in the normal location (predominant at the crypt base), 30% of crypts were devoid of Ki67-positive cells and in 60% of the crypts the Ki67-positive cells had shifted to the upper two-thirds of the crypts (Fig. 3A,B).
Within group 2B, low and high AXIN2 expression levels correlated significantly with differences in size (P = 0.01) location (P = 0.05) and crypt architecture (P = 0.01).
