0 12 Progesterone Progesterone NNP 13 24 suppression suppression NN 25 27 of of IN 28 37 pregnancy pregnancy NN 38 49 lymphocytes lymphocyte NNS 50 52 is be VBZ 53 56 not not RB 57 65 mediated mediate VBN 66 68 by by IN 69 83 glucocorticoid glucocorticoid NN 84 90 effect effect NN 90 91 . . . 93 97 This this DT 98 103 study study NN 104 116 investigated investigate VBD 117 124 whether whether IN 125 128 the the DT 129 140 suppressive suppressive JJ 141 147 effect effect NN 148 150 of of IN 151 163 progesterone progesterone NN 164 166 on on IN 167 176 pregnancy pregnancy NN 177 188 lymphocytes lymphocyte NNS 189 191 is be VBZ 192 200 mediated mediate VBN 201 203 by by IN 204 212 specific specific JJ 213 225 progesterone progesterone NN 226 235 receptors receptor NNS 235 236 . . . 237 240 The the DT 241 248 effects effect NNS 249 251 of of IN 252 253 a a DT 254 265 competitive competitive JJ 266 278 progesterone progesterone NN 279 289 antagonist antagonist NN 290 291 ( ( ( 291 296 RU486 RU486 NNP 296 297 ) ) ) 298 301 and and CC 302 303 a a DT 304 312 specific specific JJ 313 327 glucocorticoid glucocorticoid NN 328 336 receptor receptor NN 337 344 blocker blocker NN 345 346 ( ( ( 346 353 RU43044 ru43044 NN 353 354 ) ) ) 355 359 were be VBD 360 366 tested test VBN 367 369 on on IN 370 373 the the DT 374 381 release release NN 382 384 of of IN 385 386 a a DT 387 395 blocking block VBG 396 402 factor factor NN 403 405 by by IN 406 426 progesterone-treated progesterone-treated JJ 427 436 pregnancy pregnancy NN 437 448 lymphocytes lymphocyte NNS 448 449 . . . 450 452 RU RU NNP 453 456 486 486 CD 457 463 tested test VBN 464 466 at at IN 467 469 an an DT 470 475 equal equal JJ 476 489 concentration concentration NN 490 492 as as IN 493 505 progesterone progesterone NN 506 519 significantly significantly RB 520 529 inhibited inhibit VBD 530 533 the the DT 534 544 production production NN 545 547 of of IN 548 551 the the DT 552 560 blocking block VBG 561 567 factor factor NN 567 568 , , , 569 574 while while IN 575 577 RU RU NNP 578 583 43044 43044 CD 584 587 was be VBD 588 595 without without IN 596 602 effect effect NN 602 603 . . . 604 609 These these DT 610 614 data datum NNS 615 622 suggest suggest VBP 623 627 that that IN 628 630 in in IN 631 640 pregnancy pregnancy NN 640 641 , , , 642 652 lymphocyte lymphocyte NN 653 665 progesterone progesterone NN 666 670 acts act VBZ 671 673 on on IN 674 682 specific specific JJ 683 695 progesterone progesterone NN 696 705 receptors receptor NNS 706 709 and and CC 710 724 glucocorticoid glucocorticoid NN 725 732 binding binding NN 733 738 sites site NNS 739 742 are be VBP 743 746 not not RB 747 755 involved involve VBN 755 756 . . .