Raman Spectroscopic Analyses of Jaw Periosteal Cell Mineralization

<div>Spectral ratios to assess the maturity degree of collagen formed at mineralized sites in DMEM and serum-free cultured MSCA-1<sup>+</sup> JPCs. (a) Proline to hydroxyproline ratio (853/872 cm<sup>−1</sup>) indicating significant differences in maturation of collagen fibrils due to media conditions after 20 days of differentiation (statistical significance is indicated by asterisk: <svg height="13.9365pt" id="M23" style="vertical-align:-3.834pt" version="1.1" viewbox="-0.0498162 -10.1025 68.0304 13.9365" width="68.0304pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"><g transform="matrix(.0091,0,0,-0.0091,0,-5.741)"><path d="M486 158C486 177 478 202 466 220C413 228 386 236 336 262C386 288 413 297 466 304C478 323 486 347 485 366C470 376 444 381 422 380C389 338 368 319 321 288C323 345 329 372 349 422C339 442 322 461 305 470C289 461 271 442 262 422C281 372 287 345 290 288C243 319 222 338 189 380C167 381 142 376 125 366C125 347 133 322 145 304C198 296 225 288 275 262C225 236 198 227 145 220C133 201 125 177 126 158C141 148 167 143 189 144C222 186 243 205 290 236C288 179 282 152 262 102C272 82 289 63 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(b) Collagen cross-linking calculated from the 1658/1682 cm<sup>−1</sup> ratio (n.s., not statistically significant).</div>

Stem Cells International

Raman Spectroscopic Analyses of Jaw Periosteal Cell Mineralization

Figure 6