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How to Buy a Category B+ Driving License You'll need to have a Class B driver's permit to drive straight-trucks without trailers, or one with smaller trucks. You can also get endorsements such as Hazmat which permits you to haul hazardous materials. This is the permit required to operate a vehicle and trailer combination with a maximum authorised mass of 8,250kgs. This includes minibuses. What is a B+ Category license? A category B+ license is a commercial driving license that allows you drive a trailer and truck. This l

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Gradients of chemokines and growth factors guide migrating cells and morphogenetic processes. Migration of antigen-presenting dendritic cells from the interstitium into the lymphatic system is dependent on chemokine CCL21, which is secreted by endothelial cells of the lymphatic capillary, binds heparan sulfates and forms gradients decaying into the interstitium. Despite the importance of CCL21 gradients, and chemokine gradients in general, the mechanisms of gradient formation are unclear. Studies on fibroblast growth factors have sho