Abstract
The localizations of resistant proteoglycans (RPGs) in the epiphyseal plates of rats, dogs, and humans are similar. In the epiphyseal plates from young rats, dogs, and humans, the RPGs form a stratum at the junction of the zones of resting and proliferating cells. Non-calcified cartilage RPGs are associated with cells which have the potential for proliferation or column organization. As the individuals age, RPGs are found in intercolumnar regions or at times are even absent. There is also a type of RPGs in calcified cartilage, including the calcified cartilage subjacent to the articular surface, in all species. In human epiphyseal plates, looser fibrillar RPGs change abruptly to a more condensed type in the zone of provisional calcification. Calcified cartilage RPGs stain more intensely with toluidine blue and may represent a different type of RPGs.
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Campo, R.D. Resistant proteoglycans in epiphyseal plate cartilage. Variations in their distribution in relationship to age and species. Calc. Tis Res. 22, 99–115 (1977). https://doi.org/10.1007/BF02010350
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DOI: https://doi.org/10.1007/BF02010350