Swedish master medical photographer Lennart Nilsson is a pioneer in medical photography．In association with researchers and with the help of advanced, specially designed equipment, he has documented the inside of man down to the level of a cell with his camera. Born in Strängnäs, a satellite city of Stockholm, in 1922, Nilsson got his first camera from his father when he was 11 years old．From the early stage, he has been interested in looking at ants and taking photos of them.Throughout the years, he has devoted special attention to capturing the creation of a human being, from conception to birth. In 2006 when his photo book Life was published in both Swedish and English, he was invited to give a lecture at the Stockholm bookstore．He vividly described to the public how he took the photos so that the development process of the embryo can be understood better．Finally when he was signing his name in the book, I asked him what made him so passionate about working on this, he stopped writing and thought for a second, “I think it is the respect for life,” Nilsson said. Nilsson began his career as a photographic journalist in the middle of the 1940s and published a numbe  r of  pho to-essays in Swedish and foreign magazines, including "Polar Bear Hunting in Spitzbergen" (1947) and Midwife.“When I went to the professor to take the embryo photo, I was looking around and then I saw something which was unbelievable, it was  a tiny human embryo lies in a very special place, a 10-20 millimeter embryo with hands, arms and eyes, and I got a shock,” Nilsson said.Nilsson began experimenting with new photographic techniques in the mid-1950s to report on the world of ants and life in the sea．H  is revealing macro-studies were published in his book on ants, Myror (1959), and in the Life in the Sea (1959), and in Close to Nature (1984)．In the 1960s special designed, very slim endoscopes (内窥镜))made it possible f or him to photograph the blood vessels and the cavities (空洞) of the body with the necessary depth of field and, in 1970, he used a scanning electron microscope for the first tim e, he was also considered the pioneer for three dimension digital pictures of the body organs.After his photographs of human embryo were published, he was encouraged to continue photographing the origins of human being. Nilsson is very modest and sincere．At age of nearly 88, he is still cooperating with colleagues in Karolinska Institute where the Nobel Prize in Physiology or Medicine is selected every year. “He can forget all the other things when  he is working and he is still working diligently,” Mrs Nilsson told People’s Daily Online.小题1:Why does Nilsson want to document the creation of a human being?
 n we learn from the passage?
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