Gram-positive bacteria show blue or purple after Gram-staining in a laboratory test. They have thick cell walls. Gram-negative bacteria show pink or red on staining and have thin walls. They release ...
A team of Romanian scientists drilled a 25-metre ice core from the Scǎrișoara Cave in search of clues for developing new medicines. The 5,000-year-old ...
Some results have been hidden because they may be inaccessible to you
Show inaccessible results