Researchers are in the process of developing a device that measures glucose levels in saliva instead of blood. This is good news for millions of diabetics who currently measure their glucose levels by drawing blood. The device is a specially designed biochip that, according to the researchers, detects glucose levels similar to levels found in human saliva. The microchip contains thousands of sensors called plasmonic interferometers that use light and electrons to measure glucose concentration. The device can detect other chemical substances as well.
According to researcher Domenico Pacifici, "This is proof of concept that plasmonic interferometers can be used to detect molecules in low concentrations, using a footprint that is ten times smaller than a human hair... It could be possible to use these biochips to carry out the screening of multiple biomarkers for individual patients, all at once and in parallel, with unprecedented sensitivity." The researchers plan to do further testing with the device concentrating on the detection of glucose and other substances.
1.Contractile proteins actin and myosin are found in muscle tissue.
2. The skeletons of sharks and human embryos are composed of cartilage.
3.The lymphatic system helps to protect the body by destroying germs within the body.
4. Most of the nutrient absorption that takes place during digestion occurs in the small intestines.
5. The respiratory system removes gaseous waste (carbon dioxide) from the blood.
6. The Integumentary system contains the largest organ in the body, the skin.
1. The hindbrain is also known as the Rhombencephalon.
2.The forebrain is not a component of the brainstem. The brainstem is composed of the midbrain, pons and medulla oblongata.
3. The olfactory bulb is a key component in the detection of smells.
4. The ventricular system is responsible for producing cerebrospinal fluid.
5. Wernicke's area plays a crucial role in language comprehension.
6.The corpus callosum is a thick band of fibers that separate the cerebral hemispheres.
7. The meninges is the membrane that surrounds the brain and spinal cord.
8. There are 12 cranial nerves in the human brain.
9. There are 8 spinal nerves in the spinal cord.
10. Dopamine is a hormone that is released by the hypothalamus.
11. The motor cortex is located in the frontal lobe region of the brain.
Meiosis is a two part cell division process in organisms that sexually reproduce. Through a sequence of steps, the replicated genetic material in a parent cell is distributed among four daughter cells. Meiosis produces gametes with one half the number of chromosomes as the parent cell.
There are two stages of meiosis: meiosis I and meiosis II. At the end of meiosis I, two daughter cells are produced, each with one half the number of chromosomes as the original parent cell. At the end of meiosis II, four daughter cells are produced, each with one half the number of chromosomes as the original parent cell. Meiosis is similar to another cell division process called mitosis. Mitosis produces two cells that are genetically identical to and contain the same number of chromosomes as the parent cell, while meiosis produces four cells that are not genetically identical to the parent cell and contain one half the number of chromosomes. This meiosis animation illustrates the meiotic process and compares it to the process of mitosis.
Page 9 of 17