‘Preposterous’: Anthony Fauci denies cover-up of COVID origins during tense hearing
Long-awaited testimony ends in fireworks as US lawmakers spar over the former infectious-disease official’s pandemic actions.
Long-awaited testimony ends in fireworks as US lawmakers spar over the former infectious-disease official’s pandemic actions.
Scientists are now hoping the spacecraft will successfully dock with its orbiter and make a safe trip home.
Contractile forces at the surface of cells of early human embryos bring the cells together. When these forces are absent, the embryo will not develop further. ‘Weak’ cells do not produce these forces and cannot contribute to the embryo. These observations should influence clinical choices during assisted reproductive-technology procedures.