Word: shields
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Dates: during 1970-1979
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...shelter; or 2) remove one; or 3) do neither, but deceptively remain at the entrance for the time it would take to load or unload a missile. To prevent Soviet spy satellites from detecting what was going on, the TEL's actions would be completely shrouded by the "shield vehicle," another truck that straddles the TEL much as a turtle is covered by its shell...
...tumors have a shield...
What the team found was that early in their development, tumors secrete three powerful chemicals that promote formation of a protective shield of fibrin gel around them. One substance encourages nearby blood vessels to leak plasma; another turns fibrinogen, a plasma constitutent, into fibrin; the third diverts immune cells away from the growing shield. Dvorak speculates that the tumor's chemical weaponry is so sophisticated that the fibrin itself encourages growth of blood vessels in the vicinity of the tumor, providing the malignant cells with a nourishing blood supply. As it enlarges, the tumor appears to secrete a fourth...
...even as Israel's international problems appeared to subside, serious national troubles cried for attention right outside Begin's hospital room. His illness was only a temporary shield from the political turmoil engendered by the harsh facts of Israel's runaway economic crisis: an 80% inflation that threatens to exceed 100% by the end of the year, a balance of payments deficit that is approaching $4 billion, a total foreign debt that has doubled in five years to $13 billion...
...before Columbia or any of the three other orbiters that Rockwell International is building for NASA can undertake such projects, major problems must be overcome. One difficulty: finishing the laborious job of affixing 40,000 or so silica foam tiles to the orbiter's outer skin. These shield it from the blazing temperatures (nearly 3,000° F) that the ship will encounter when it re-enters the atmosphere and glides to a landing at either the Kennedy Space Center or Vandenberg Air Force Base in California. A more serious difficulty: ironing the bugs out of the shuttle...