[R] store variable as tab-del. txt-file

[Schmitt, Corinna]

Hallo,
how can I store a variable as a tab-delimited txt-file? I crated a
variable with the following commands:

> fit12<-lmFit(qrg[,1:2])
> t12<-toptable(fit12,adjust="fdr",number=25,genelist=qrg$genes[,1])
> t12
            ID     logFC         t      P.Value  adj.P.Val        B
522    PLAU_OP -6.836144 -8.420414 5.589416e-05 0.01212520 2.054965
1555  CD44_WIZ -6.569622 -8.227938 6.510169e-05 0.01212520 1.944046
767   CD44_WIZ -8.164317 -8.201678 6.648556e-05 0.01212520 1.928622
1234  EMP1_WIZ -6.822609 -8.145985 6.953146e-05 0.01212520 1.895674
445   EMP1_WIZ -6.796011 -8.079979 7.334676e-05 0.01212520 1.856207
1310   PLAU_OP -6.361645 -7.955721 8.118607e-05 0.01212520 1.780656
1460 FOSL1_WIZ -6.265342 -7.841959 8.919795e-05 0.01212520 1.710025
1459 FOSL1_WIZ -6.132684 -7.692912 1.010747e-04 0.01212520 1.615319
1326  RAC2_WIZ -6.130817 -7.648676 1.049345e-04 0.01212520 1.586728
768   CD44_WIZ -6.054628 -7.592040 1.101204e-04 0.01212520 1.549795
537   RAC2_WIZ -6.447683 -7.577670 1.114816e-04 0.01212520 1.540365
1418  FOSL1_OP -6.022508 -7.556906 1.134820e-04 0.01212520 1.526697
1210   EMP1_OP -5.997289 -7.502210 1.189472e-04 0.01212520 1.490452
672  FOSL1_WIZ -6.060602 -7.491438 1.200581e-04 0.01212520 1.483272
446   EMP1_WIZ -6.211220 -7.461834 1.231715e-04 0.01212520 1.463470
545   PLAU_WIZ -5.931195 -7.429649 1.266597e-04 0.01212520 1.441824
630   FOSL1_OP -5.877253 -7.368262 1.336248e-04 0.01212520 1.400193
671  FOSL1_WIZ -5.870755 -7.325227 1.387642e-04 0.01212520 1.370736
1417  FOSL1_OP -5.813254 -7.294160 1.426123e-04 0.01212520 1.349331
422    EMP1_OP -6.013347 -7.286186 1.436191e-04 0.01212520 1.343819
546   PLAU_WIZ -6.030866 -7.282026 1.441477e-04 0.01212520 1.340939
369   PLAUR_OP -6.054368 -7.209710 1.536923e-04 0.01212520 1.290546
538   RAC2_WIZ -5.959863 -7.147772 1.624334e-04 0.01212520 1.246868
1325  RAC2_WIZ -5.811128 -7.144946 1.628454e-04 0.01212520 1.244864
1309   PLAU_OP -6.028117 -7.075208 1.733917e-04 0.01239404 1.195081
>

Now I want to store t12 as a tab-delimited txt-file to use it in other
programm. How can I realize this?

Thanks, Corinna