Saline | Cocaine | |
---|---|---|

k(days^{−1}) | 0.32 | 0.31 |

r (fmol/mg tissue/day) | 93 | 91 |

t
_{1/2}(days) | 2.2 | 2.2 |

In this table, *k* is the transporter degradation rate constant, *r* is the transporter production rate, and*t*_{1/2} is the half-life of transporter repopulation. These values were calculated by generating a linear fit of the data shown in Fig. 4.