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When in Doubt, Do a Wash

At Bitesize Bio, blogger Suzanne gives some tips for getting lots of pure double-stranded DNA from a gel extraction. Her 10 suggestions include trimming off as much of the agarose gel as possible and minimizing the DNA's exposure to UV light or, instead, using methylene blue or crystal violet stains. For commercial silica spin kits, she advises heating the elution buffer and using the good ethanol.

The Scan

Pig Organ Transplants Considered

The Wall Street Journal reports that the US Food and Drug Administration may soon allow clinical trials that involve transplanting pig organs into humans.

'Poo-Bank' Proposal

Harvard Medical School researchers suggest people should bank stool samples when they are young to transplant when they later develop age-related diseases.

Spurred to Develop Again

New Scientist reports that researchers may have uncovered why about 60 percent of in vitro fertilization embryos stop developing.

Science Papers Examine Breast Milk Cell Populations, Cerebral Cortex Cellular Diversity, Micronesia Population History

In Science this week: unique cell populations found within breast milk, 100 transcriptionally distinct cell populations uncovered in the cerebral cortex, and more.