The Senate didn't remove Johnson from office after the House impeached him because they couldn't get two-thirds of the Senate to agree to find him guilty. Johnson was acquitted by a single vote. The word Congress refers to the Senate and the House of Representatives as a whole, and doesn't apply here.
An allograft is a graft between genetically dissimilar members of the same species. An allograft may be obtained from living donors who are having bone removed during surgery or cadaveric donors. Allograft material has been used for more than 30 years in periodontal therapy.There are several types of allografts:n allograft is a graft between genetically dissimilar members of the same species. An allograft may be obtained from living donors who are having bone removed during surgery or cadaveric donors. Allograft material has been used for more than 30 years in periodontal therapy. There are several types of allografts:
Three of four allografts treated with IT + tacrolimus succumbed to acute cellular rejection by 1 month; however, all four animals treated with IT + tacrolimus + alefacept had donor-specific alloantibody production as well as histological and ultrastructural evidence of antibody-mediated injury.