ANSWER: Both a and b
Explanation:
Scientists have developed new super paramagnetic crystals which can deliver drugs through the body in a precise, accurate way.
- It revolutionises drug delivery to tumours and other sites in the body
- This was initially thought to be impossible because crystals which have special magnetic properties could not be controlled as they were too small in size
- A new team of researchers however, developed a technique for making the crystals bigger, saving many lives and revolutionising treatment
- Larger crystals also do not aggregate when those fields are removed, which will make them more useful in practical applications including drug delivery
- These can also serve an important function in engineering projects that need smart fluids to change their properties when the magnetic field is applied
- They can also be used to develop prosthetic limbs.
