the group is led by akira kurisaki, a senior researcher at the national institute of advanced industrial science and technology. the researchers created lumps of cells by injecting a special time of protein into the mouse stem cells. they cultured the lumps in a gelatinous substance for two months. they say some of the lumps turned into balloon-like structures 2 to 3 millimeters in diameter. the findings could lead to development of experimental drugs for stomach diseases and help identify the causes of such illnesses. >>> with the new school term around the corner, officials at an npo are urging parents and teachers to pay extra attention to children who may be at risk of suicide. the npo supports children who refuse to go to school. many children who commit suicide do so immediately after the summer vacation. the move comes after japan's cabinet office published the results of a survey of more than 18,000 children who killed themselves between 1972 and 2013. the largest number or 131 of the children aged 18 and under committed suicide on september 1st, the date when many japanese schoo