Print-on-demand uses digital printing to produce as few as one or two books (or other documents) at a time. Although the cost per item is higher than it might be with larger runs, it is more cost-effective than offset or other plate-based printing methods when doing small runs.
It is not known exactly how Imuran works to prevent kidney transplant rejection or to treat rheumatoid arthritis. Imuran acts in a way similar to certain types of chemotherapy medications, killing cells by damaging DNA. Also, much like chemotherapy medications, Imuran suppresses the immune system (it is thought that the medication works mostly by suppressing the immune system). The immune system is responsible for rejecting transplanted organs, and an overactive immune system plays an important role in rheumatoid arthritis.
Many different types of chemotherapy drugs are used to treat breast cancer. Common types of chemotherapy drug classes include: Anthracyclines include doxorubicin (Adriamycin) and epirubicin (Ellence). Anthracycline-based combination regimens are often used to treat early-stage breast cancer, as well as advanced cancer.