Spot the difference puzzles are sometimes known as 'Photo hunt' games. The goal is to find a number of differences between two near-identical images, which may be drawings, computer graphics, or photographs. SpotTheDifference.com offers you a massive selection of puzzles and games at all levels of difficulty.
The catalase test is used to differentiate staphylococci (catalase-positive) from streptococci (catalase-negative). The enzyme, catalase, is produced by bacteria that respire using oxygen, and protects them from the toxic by-products of oxygen metabolism.he catalase test is used to differentiate staphylococci (catalase-positive) from streptococci (catalase-negative). The enzyme, catalase, is produced by bacteria that respire using oxygen, and protects them from the toxic by-products of oxygen metabolism.
Your test is positive if it finds antinuclear antibodies in your blood. A negative result means it found no ANAs. A positive result may mean that you have an autoimmune disease such as lupus. Thatâs a disease that damages joints, skin, and other organs. About 95% of people with lupus will test positive for antinuclear antibodies. A positive test result can also mean that you have one of these other autoimmune diseases: SjÃ¶gren's syndrome-- a disease that causes joint damage, as well as dry eyes and mouth