A scientist observed: “After many, many years of peering at virus particles through the electron microscope, I have still not ceased to be amazed and excited by the precision and intricacy of design in something so very, very small. ”
* अस्थिमज्जेत तयार होणाऱ्‍या पांढऱ्‍या पेशी या प्रतिकार यंत्रणेच्या मुख्य सूत्रधार आहेत.