0 15 Transcriptional transcriptional JJ 16 26 regulation regulation NN 27 33 during during IN 34 40 T-cell t-cell NN 41 52 development development NN 52 53 : : : 54 57 the the DT 58 63 alpha alpha NN 64 67 TCR TCR NNP 68 72 gene gene NN 73 75 as as IN 76 77 a a DT 78 87 molecular molecular JJ 88 93 model model NN 93 94 . . . 96 99 The the DT 100 110 regulation regulation NN 111 113 of of IN 114 118 gene gene NN 119 129 expression expression NN 130 136 during during IN 137 147 lymphocyte lymphocyte NN 148 163 differentiation differentiation NN 164 166 is be VBZ 167 168 a a DT 169 176 complex complex JJ 177 184 process process NN 185 194 involving involve VBG 195 207 interactions interaction NNS 208 215 between between IN 216 224 multiple multiple JJ 225 233 positive positive JJ 234 237 and and CC 238 246 negative negative JJ 247 262 transcriptional transcriptional JJ 263 273 regulatory regulatory JJ 274 282 elements element NNS 282 283 . . . 284 286 In in IN 287 291 this this DT 292 299 article article NN 299 300 , , , 301 316 transcriptional transcriptional JJ 317 327 regulation regulation NN 328 330 of of IN 331 334 the the DT 335 345 archetypal archetypal JJ 346 361 T-cell-specific t-cell-specific JJ 362 366 gene gene NN 366 367 , , , 368 373 alpha alpha NN 374 377 TCR TCR NNP 377 378 , , , 379 381 is be VBZ 382 391 discussed discuss VBN 391 392 . . . 393 398 Major major JJ 399 405 recent recent JJ 406 418 developments development NNS 418 419 , , , 420 429 including include VBG 430 433 the the DT 434 448 identification identification NN 449 451 of of IN 452 457 novel novel JJ 458 466 families family NNS 467 469 of of IN 470 483 transcription transcription NN 484 491 factors factor NNS 492 496 that that WDT 497 505 regulate regulate VBP 506 514 multiple multiple JJ 515 521 T-cell t-cell NN 522 527 genes gene NNS 528 534 during during IN 535 544 thymocyte thymocyte NN 545 553 ontogeny ontogeny NN 554 557 and and CC 558 564 T-cell t-cell NN 565 575 activation activation NN 575 576 , , , 577 580 are be VBP 581 590 described describe VBN 590 591 . . .