I think the answer is neutronium
In the sliding filament model of muscle contraction, the myofilaments slide over each other, resulting in the overlapping of actin and <span>myosin. Hope this helps. Have a nice day. Feel free to ask more questions. Thank you.</span>
... and a power ot ten.
For example: 1,3x10^21 is in scientific notation, but 13x10^20 is not in scientific notation.