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:
The bone may be taken either from another bone in the patient (autograft) or from a bone bank (allograft). Fusion using bone taken from the patient has a long history of use and results in predictable healing. Autograft is currently the âgold standardâ source of bone for a fusion.