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Did you know?
Autoimmune diseases occur when the immune system destroys its own healthy tissues. When this occurs, white blood cells cannot distinguish between pathogens and normal cells.
Did you know?
The average office desk has 400 times more bacteria on it than a toilet.
Did you know?
More than 2,500 barbiturates have been synthesized. At the height of their popularity, about 50 were marketed for human use.
Did you know?
Automated pill dispensing systems have alarms to alert patients when the correct dosing time has arrived. Most systems work with many varieties of medications, so patients who are taking a variety of drugs can still be in control of their dose regimen.
Did you know?
The horizontal fraction bar was introduced by the Arabs.
![Measuring the resistance of an HEI pickup coil using a digital multimeter set to the ohms position. ...](https://biology-forums.com/gallery/29/medium_548020_30_05_17_7_14_02_298351153.png)
![Measuring the resistance of the ECT sensor. The resistance measurement can then be compared with ...](https://biology-forums.com/gallery/29/medium_548020_30_05_17_8_38_08_29902580.png)