Such earnings are stated after depreciation, which presumably will allow replacement of
present productive capacity — if that plant and equipment can be purchased in the future at prices similar to their original cost.
Charles Janeway introduces the hypothesis that «components of the innate [immune] system, especially antigen -
presenting cells such as DCs, required the microbial stimuli contained in [adjuvants] to become activated and acquire the
capacity to induce
productive responses from antigen - specific lymphocytes.