Word: sperms
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Dates: during 1930-1939
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...comes new knowledge of the nature of human beings, who are just cells multiplied and grown up. Last spring Dr. Francis Ferdinand Lucas, microscopist of Bell Telephone Laboratories, perfected an ultraviolet ray microscope capable of showing living cells in action. He set it to work photographing brain, cancer and sperm cells (TIME, March 2). Last week was tested a device to extract new cell secrets...
...segregated groups of boys and girls, 11 & 13 years old, during an 18 to 36-week period. So that the segregation may not engender suspicion, the class alternates with physical education classes, where segregation occurs normally. Beginning with the simplest of biological forms, the course first takes up asexual (sperm-less, eggless) forms. Then come plants & animals which contain both male & female apparatus; then males & females which reproduce by fertilization, internal or external. Lastly come the anatomical, social and ethical features of Man's sexual organization...
...inorganic matter) and a unicellular bit of protoplasm (lowest form of living matter) has been a gap which scientists have never been able to span. In a recent issue of Nature, British scientific weekly, Dr. F. Rinne, University of Freiburg, Germany, suggested similarities between a crystal and a simple sperm cell which may be the means of drawing living and nonliving matter together. He pointed out that a chief characteristic of liquid crystals* is the so-called "straight-stretch" type of molecule which composes it. Protein molecules of sperm cells are also of the "straight stretch" type. In addition...