T\u00ecm hi\u1ec3u v\u1ec1\u00a0 v\u1ea3y g\u00e0 ng\u0169 qu\u1ef7 l\u00e0 g\u00ec<\/figcaption><\/figure>\nV\u1ea3y ng\u0169 qu\u1ef7 xu\u1ea5t hi\u1ec7n \u1edf c\u1ea3 hai ch\u00e2n c\u1ee7a g\u00e0, t\u1ea1o n\u00ean s\u1ef1 \u0111\u1ed1i x\u1ee9ng v\u00e0 \u0111\u1ed3ng nh\u1ea5t c\u00e0ng l\u00e0m t\u0103ng gi\u00e1 tr\u1ecb c\u1ee7a chi\u1ebfn k\u00ea. Theo nhi\u1ec1u nghi\u00ean c\u1ee9u th\u00ec ng\u0169 qu\u1ef7 l\u00e0 m\u1ed9t trong nh\u1eefng lo\u1ea1i hi\u1ebfm g\u1eb7p nh\u1ea5t trong th\u1ebf gi\u1edbi. Theo \u0111\u00f3, ch\u1ec9 c\u00f3 kho\u1ea3ng 1-2 chi\u1ebfn k\u00ea trong 1000 con c\u00f3 n\u00e9t \u0111\u1eb7c tr\u01b0ng n\u00e0y.<\/span><\/p>\nNhi\u1ec1u ng\u01b0\u1eddi kh\u00f4ng ti\u1ebfc ti\u1ec1n \u0111\u1ec3 s\u0103n l\u00f9ng chi\u1ebfn k\u00ea c\u00f3 ng\u0169 qu\u1ef7, th\u1eadm ch\u00ed b\u1ecf ra h\u00e0ng ch\u1ee5c tri\u1ec7u \u0111\u1ed3ng nh\u01b0ng v\u1eabn kh\u00f3 c\u00f3 th\u1ec3 t\u00ecm \u0111\u01b0\u1ee3c. Vi\u1ec7c ch\u1ee9ng ki\u1ebfn m\u1ed9t chi\u1ebfn k\u00ea mang v\u1ea3y ng\u0169 qu\u1ef7 thi \u0111\u1ea5u l\u00e0 \u0111i\u1ec1u c\u1ef1c k\u1ef3 hi\u1ebfm hoi, ch\u1ee9 ch\u01b0a n\u00f3i \u0111\u1ebfn vi\u1ec7c s\u1edf h\u1eefu ch\u00fang.<\/span><\/p>\n