Q: What is a question about this article? If the question is unanswerable, say "unanswerable".
Tuberculosis is classified as one of the granulomatous inflammatory diseases. Macrophages, T lymphocytes, B lymphocytes, and fibroblasts aggregate to form granulomas, with lymphocytes surrounding the infected macrophages. When other macrophages attack the infected macrophage, they fuse together to form a giant multinucleated cell in the alveolar lumen. The granuloma may prevent dissemination of the mycobacteria and provide a local environment for interaction of cells of the immune system. However, more recent evidence suggests that the bacteria use the granulomas to avoid destruction by the host's immune system. Macrophages and dendritic cells in the granulomas are unable to present antigen to lymphocytes; thus the immune response is suppressed. Bacteria inside the granuloma can become dormant, resulting in latent infection. Another feature of the granulomas is the development of abnormal cell death (necrosis) in the center of tubercles. To the naked eye, this has the texture of soft, white cheese and is termed caseous necrosis.
What surrounds the lymphocytes?
A: unanswerable

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The energy levels of hydrogen can be calculated fairly accurately using the Bohr model of the atom, which conceptualizes the electron as "orbiting" the proton in analogy to the Earth's orbit of the Sun. However, the electromagnetic force attracts electrons and protons to one another, while planets and celestial objects are attracted to each other by gravity. Because of the discretization of angular momentum postulated in early quantum mechanics by Bohr, the electron in the Bohr model can only occupy certain allowed distances from the proton, and therefore only certain allowed energies.
What does the electromagnetic force attract to one another?
A: electrons and protons

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Approximately 26,000 citizen soldiers, sailors, and airmen and women, trained to the level of and interchangeable with their Regular Force counterparts, and posted to CAF operations or duties on a casual or ongoing basis, make up the Primary Reserve. This group is represented, though not commanded, at NDHQ by the Chief of Reserves and Cadets, who is usually a major general or rear admiral, and is divided into four components that are each operationally and administratively responsible to its corresponding environmental command in the Regular Force – the Naval Reserve (NAVRES), Land Force Reserve (LFR), and Air Reserve (AIRRES) – in addition to one force that does not fall under an environmental command, the Health Services Reserve under the Canadian Forces Health Services Group.
 What are some of the components of the non-reserve force?
A: unanswerable

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The Middle Triassic spans from 247 million to 237 million years ago. The Middle Triassic featured the beginnings of the breakup of Pangaea, and the beginning of the Tethys Sea. The ecosystem had recovered from the devastation that was the Great Dying. Phytoplankton, coral, and crustaceans all had recovered, and the reptiles began to get bigger and bigger. New aquatic reptiles evolved such as Ichthyosaurs and Nothosaurs. Meanwhile, on land, Pine forests flourished, bringing along mosquitoes and fruit flies. The first ancient crocodilians evolved, which sparked competition with the large amphibians that had since ruled the freshwater world.
Pine forests brought about the demise of what insects?
A:
unanswerable