Word: broths
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...after three days only four, and after nine days only a single active particle in a ton. If things did not work this way in practice. Dr. Salk argued, it must be because of ''fractional inactivation." This might result from the clumping of virus particles (leaving a broth that was not homogenized). In this way, virus particles could survive the formaldehyde bath if they were in the middle of a clump and protected by dead brethren...
...main types. All can cause paralysis, but one type causes more than the others combined. Within each type there are many different strains. The Salk vaccine is made by taking a representative strain of each type and growing it-till it reaches many times its original strength -in a broth made with snips of monkey kidney. (To keep production going, 4,000 monkeys a month are flown in from India and the Philippines.) Then the virus in each deadly brew is killed with formaldehyde. Strangely, although the virus particles now lose their power to multiply or to cause disease, they...
...Sister! do not rouse my wrath, I'd make you into mutton broth As easily as kill a moth...
...stock has just divided into two new individuals. Working with a powerful microscope, he picks one of them up with a hairlike suction tube and delicately transfers it to a minute cup on top of the Cartesian diver. It cannot escape, but it thrives slimily on a broth of smaller protozoa. By measuring the pressure that will keep the underwater Cartesian diver on the zero line, Dr. Prescott can weigh his captive amoeba at all stages of growth. When the amoeba has doubled in weight, it generally divides into two "daughters...
Columnists Joseph and Stewart Alsop, generally faithful supporters of the Fair Deals, have measured in small doses their praise for the record of Dwight Eisenhower as President. Last week the Broth ers Alsop gave a new estimate of the Eisenhower Administration...