Before revision:  In the force-ramp protocol we investigate the strength of the attachment by assuming imposition of a time-dependent external load tension that increases linearly with time till the attachment gets ruptured, we calculate the distribution of the rupture forces that fluctuates from one loading to another. In the force-clamp protocol, to test the stability, we compute the distribution of the lifetimes of the attachments under externally applied time-independent load tension, the results establish the MT-wall attachment to be an analog of a slip-bond  .
After revision:  In the force-ramp protocol we investigate the strength of the MT-cell attachment behaves as a catch-bond or slip-bond .