Nh\u00e2n t\u1ebf b\u00e0o trong t\u1ebf b\u00e0o l\u00e0 nh\u00e2n do t\u1ebf b\u00e0o ti\u1ebfn h\u00e0nh ho\u1ea1t \u0111\u1ed9ng s\u1ef1 s\u1ed1ng. Khi t\u1ebf b\u00e0o ti\u1ebfn h\u00e0nh ph\u00e2n chia, tr\u01b0\u1edbc ti\u00ean l\u00e0 nh\u00e2n t\u1ebf b\u00e0o ph\u00e2n chia.<\/p>\n\n\n\n
N\u1ebfu l\u1ea5y m\u1ed9t s\u1ed1 t\u1ebf b\u00e0o \u0111ang ti\u1ebfn h\u00e0nh ph\u00e2n chia, ng\u00e2m ch\u00fang trong dung d\u1ecbch carmine magenta, sau khi r\u1eeda s\u1ea1ch, \u0111\u1eb7t d\u01b0\u1edbi k\u00ednh hi\u1ec3n vi quan s\u00e1t, c\u00f3 th\u1ec3 th\u1ea5y trong nh\u00e2n t\u1ebf b\u00e0o c\u00f3 m\u1ed9t s\u1ed1 b\u1ecb thu\u1ed1c nhu\u1ed9m th\u00e0nh m\u00e0u \u0111\u1ecf \u0111\u1eadm. Ch\u1ea5t d\u1ec5 b\u1ecb nhu\u1ed9m m\u00e0u n\u00e0y g\u1ecdi l\u00e0 ch\u1ea5t nhi\u1ec5m s\u1eafc. Trong t\u1ebf b\u00e0o ph\u00e2n chia, ch\u1ea5t nhi\u1ec5m s\u1eafc k\u1ebft th\u00e0nh t\u1eebng s\u1ee3i t\u1eebng s\u1ee3i nhi\u1ec5m s\u1eafc th\u1ec3, nhi\u1ec5m s\u1eafc th\u1ec3 l\u00e0 ch\u1ea5t quan tr\u1ecdng nh\u1ea5t trong nh\u00e2n t\u1ebf b\u00e0o, khi t\u1ebf b\u00e0o ph\u00e2n chia, tr\u01b0\u1edbc ti\u00ean nhi\u1ec5m s\u1eafc th\u1ec3 ph\u00e2n th\u00e0nh hai ph\u1ea7n sau \u0111\u00f3 m\u1edbi ph\u00e2n th\u00e0nh hai nh\u00e2n t\u1ebf b\u00e0o.<\/p>\n\n\n\n
Nhi\u1ec1u nh\u00e0 khoa h\u1ecdc quan s\u00e1t r\u1ea5t nhi\u1ec1u nhi\u1ec5m s\u1eafc th\u1ec3 c\u1ee7a th\u1ef1c v\u1eadt th\u1ea5y \u0111\u01b0\u1ee3c, m\u1ed7i lo\u1ea1i th\u1ef1c v\u1eadt \u0111\u1ec1u c\u00f3 s\u1ed1 nhi\u1ec5m s\u1eafc th\u1ec3 nh\u1ea5t \u0111\u1ecbnh. V\u00ed d\u1ee5, t\u1ebf b\u00e0o c\u00e2y thu\u1ed1c l\u00e1 c\u00f3 28 s\u1ee3i nhi\u1ec5m s\u1eafc th\u1ec3, t\u1ebf b\u00e0o c\u00e2y l\u00faa c\u00f3 24 s\u1ee3i nhi\u1ec5m s\u1eafc th\u1ec3.<\/p>\n\n\n\n
Khi th\u1ef1c v\u1eadt mu\u1ed1n h\u00ecnh th\u00e0nh nh\u1eefng h\u1ea1t ph\u1ea5n hoa (khi h\u00ecnh th\u00e0nh t\u1ebf b\u00e0o no\u00e3n c\u0169ng nh\u01b0 v\u1eady), t\u1ebf b\u00e0o m\u1eb9 c\u1ee7a ph\u1ea5n hoa ph\u1ea3i li\u00ean t\u1ee5c ph\u00e2n chia hai l\u1ea7n, h\u00ecnh th\u00e0nh b\u1ed1n b\u00e0o t\u1eed nh\u1ecf. Tr\u01b0\u1edbc khi ph\u00e2n chia, nhi\u1ec5m s\u1eafc th\u1ec3 trong t\u1ebf b\u00e0o m\u1eb9 c\u1ea7n \u0111\u01b0\u1ee3c ph\u00e2n ph\u1ed1i \u0111\u1ed3ng \u0111\u1ec1u m\u1ed9t ch\u00fat trong b\u1ed1n t\u1ebf b\u00e0o con (th\u01b0\u1eddng t\u1ebf b\u00e0o ph\u00e2n chia, nhi\u1ec5m s\u1eafc th\u1ec3 ph\u00e2n ph\u1ed1i \u0111\u1ed3ng \u0111\u1ec1u trong hai t\u1ebf b\u00e0o) cho n\u00ean s\u1ed1 nhi\u1ec5m s\u1eafc th\u1ec3 c\u1ee7a b\u00e0o t\u1eed con m\u1edbi h\u00ecnh th\u00e0nh ch\u1ec9 b\u1eb1ng m\u1ed9t n\u1eeda s\u1ed1 nhi\u1ec5m s\u1eafc th\u1ec3 trong t\u1ebf b\u00e0o m\u1edbi h\u00ecnh th\u00e0nh, v\u00ec v\u1eady g\u1ecdi s\u1ef1 ph\u00e2n chia l\u00e0m gi\u1ea3m s\u1ed1 l\u01b0\u1ee3ng (gi\u1ea3m ph\u00e2n). V\u00ed d\u1ee5, b\u00e0o t\u1eed con c\u1ee7a c\u00e2y thu\u1ed1c l\u00e1 ch\u1ec9 c\u00f3 24 s\u1ee3i nhi\u1ec5m s\u1eafc th\u1ec3. Con ng\u01b0\u1eddi g\u1ecdi nh\u1eefng t\u1ebf b\u00e0o ch\u1ec9 c\u00f3 n\u1eeda s\u1ed1 nhi\u1ec5m s\u1eafc th\u1ec3 l\u00e0 t\u1ebf b\u00e0o \u0111\u01a1n b\u1ed9i th\u1ec3 (c\u0169ng c\u00f3 th\u1ec3 g\u1ecdi l\u00e0 t\u1ebf b\u00e0o b\u00e1n b\u1ed9i th\u1ec3); c\u00f2n g\u1ecdi t\u1ebf b\u00e0o tr\u01b0\u1edbc t\u1ebf b\u00e0o m\u1eb9 c\u1ee7a ph\u1ea5n hoa l\u00e0 t\u1ebf b\u00e0o nh\u1ecb b\u1ed9i th\u1ec3.<\/p>\n\n\n\n
Khi ti\u1ebfn h\u00e0nh th\u1ee5 tinh, tinh tr\u00f9ng c\u1ee7a ph\u1ea5n hoa (t\u1ebf b\u00e0o sinh s\u1ea3n) v\u00e0 t\u1ebf b\u00e0o no\u00e3n k\u1ebft h\u1ee3p, hai t\u1ebf b\u00e0o h\u1ee3p th\u00e0nh m\u1ed9t t\u1ebf b\u00e0o, c\u00f3 nhi\u1ec5m s\u1eafc th\u1ec3 trong t\u1ebf b\u00e0o m\u1edbi t\u0103ng g\u1ea5p \u0111\u00f4i, l\u1ea1i th\u00e0nh t\u1ebf b\u00e0o nh\u1ecb b\u1ed9i th\u1ec3, cho n\u00ean trong m\u1ed9t \u0111\u1eddi th\u1ef1c v\u1eadt, s\u1ed1 nhi\u1ec5m s\u1eafc th\u1ec3 trong nh\u00e2n t\u1ebf b\u00e0o c\u00f3 m\u1ed9t qu\u00e1 tr\u00ecnh bi\u1ebfn \u0111\u1ed9ng. Nhi\u1ec5m s\u1eafc th\u1ec3 trong t\u1ebf b\u00e0o l\u00e0 \u0111\u01a1n b\u1ed9i, b\u1eaft \u0111\u1ea7u t\u1eeb khi th\u1ee5 tinh tr\u1ee9ng, trong qu\u00e1 tr\u00ecnh sinh tr\u01b0\u1edfng dinh d\u01b0\u1ee1ng l\u00e2u d\u00e0i, t\u1ebf b\u00e0o c\u1ee7a to\u00e0n b\u1ed9 c\u01a1 th\u1ec3 th\u1ef1c v\u1eadt l\u00e0 t\u1ebf b\u00e0o nh\u1ecb b\u1ed9i th\u1ec3, cho \u0111\u1ebfn khi m\u1ed9t l\u1ea7n n\u1eefa qua s\u1ef1 ph\u00e2n chia gi\u1ea3m s\u1ed1 l\u01b0\u1ee3ng, h\u00ecnh th\u00e0nh t\u1ebf b\u00e0o t\u00ednh th\u00ec d\u1eebng l\u1ea1i.<\/p>\n\n\n\n
S\u1ef1 ph\u00e1t tri\u1ec3n c\u1ee7a k\u0129 thu\u1eadt nu\u00f4i d\u01b0\u1ee1ng t\u1ebf b\u00e0o th\u1ef1c v\u1eadt \u0111\u00e3 c\u00f3 th\u1ec3 khi\u1ebfn cho h\u1ea1t ph\u1ea5n hoa kh\u00f4ng qua th\u1ee5 tinh m\u00e0 l\u1edbn th\u00e0nh c\u00e2y, c\u00e2y n\u00e0y g\u1ecdi l\u00e0 c\u00e2y \u0111\u01a1n b\u1ed9i th\u1ec3. C\u00e2y \u0111\u01a1n b\u1ed9i th\u1ec3 m\u1ecdc v\u1eeba y\u1ebfu v\u1eeba nh\u1ecf, y\u1ebfu \u0111\u1ebfn n\u1ed7i gi\u00f3 th\u1ed5i bay. C\u00f2n c\u00e2y nh\u1ecb b\u1ed9i th\u1ec3 t\u1eeb th\u1ee5 tinh tr\u1ee9ng l\u1edbn l\u00ean th\u00ec th\u00f4 kho\u1ebb v\u00e0 k\u1ebft qu\u1ea3.<\/p>\n\n\n\n
Hi\u1ec7n t\u01b0\u1ee3ng n\u00e0y g\u1ee3i m\u1edf cho con ng\u01b0\u1eddi ngh\u0129: C\u00e2y tam b\u1ed9i th\u1ec3, t\u1ee9 b\u1ed9i th\u1ec3, b\u00e1t b\u1ed9i th\u1ec3 (g\u1ecdi chung l\u00e0 th\u1ef1c v\u1eadt \u0111a b\u1ed9i th\u1ec3), c\u00f3 th\u1ec3 l\u1edbn cao to \u0111\u01b0\u1ee3c kh\u00f4ng, kho\u1ebb \u0111\u01b0\u1ee3c kh\u00f4ng? Cu\u1ed1i c\u00f9ng \u0111\u00e3 t\u00ecm th\u1ea5y m\u1ed9t v\u1ecb thu\u1ed1c g\u1ecdi l\u00e0 colchicine, t\u01b0\u1edbi v\u00e0o th\u1ef1c v\u1eadt s\u1ebd \u0111\u01b0\u1ee3c \u0111a b\u1ed9i th\u1ec3. Sau khi qua ch\u1ea5t n\u00e0y x\u1eed l\u00ed, s\u1ed1 nhi\u1ec5m s\u1eafc th\u1ec3 trong t\u1ebf b\u00e0o v\u1eabn t\u0103ng ti\u1ebfn h\u00e0nh theo chu k\u00ec t\u1ebf b\u00e0o b\u00ecnh th\u01b0\u1eddng tr\u01b0\u1edbc kia. Nh\u01b0ng s\u1ef1 ph\u00e2n chia c\u1ee7a nh\u00e2n t\u1ebf b\u00e0o th\u00ec g\u1eb7p tr\u1edf ng\u1ea1i, qu\u00e1 tr\u00ecnh n\u00e0y v\u1eeba v\u1eb7n ng\u01b0\u1ee3c l\u1ea1i v\u1edbi qu\u00e1 tr\u00ecnh ph\u00e2n chia gi\u1ea3m s\u1ed1 l\u01b0\u1ee3ng. Cho n\u00ean s\u1ed1 l\u01b0\u1ee3ng nhi\u1ec5m s\u1eafc th\u1ec3 trong nh\u00e2n t\u0103ng g\u1ea5p b\u1ed9i, th\u1ef1c v\u1eadt \u0111a b\u1ed9i th\u1ec3 n\u00e0y cao to khi\u1ebfn cho ng\u01b0\u1eddi ta kinh ng\u1ea1c, v\u00ed d\u1ee5 h\u1ea1t c\u1ee7a c\u00e2y m\u00ec \u0111a b\u1ed9i th\u1ec3 to g\u1ea5p \u0111\u00f4i c\u00e2y m\u00ec b\u00ecnh th\u01b0\u1eddng.<\/p>\n\n\n\n
V\u1eady t\u1ea1i sao trong s\u1ea3n xu\u1ea5t n\u00f4ng nghi\u1ec7p c\u00f2n r\u1ea5t \u00edt khi tr\u1ed3ng th\u1ef1c v\u1eadt \u0111a b\u1ed9i th\u1ec3? L\u00e0 v\u00ec nhi\u1ec5m s\u1eafc th\u1ec3 c\u1ee7a t\u1ebf b\u00e0o \u0111\u1ef1c v\u00e0 t\u1ebf b\u00e0o c\u00e1i c\u1ee7a th\u1ef1c v\u1eadt \u0111a b\u1ed9i th\u1ec3 kh\u00f3 ph\u1ed1i h\u1ee3p, th\u01b0\u1eddng k\u1ebft h\u1ea1t c\u1ef1c \u00edt, s\u1ea3n l\u01b0\u1ee3ng kh\u00f4ng t\u0103ng m\u00e0 l\u1ea1i gi\u1ea3m. Nh\u01b0ng \u0111a b\u1ed9i th\u1ec3 \u0111\u00e3 \u0111\u01b0\u1ee3c \u1ee9ng d\u1ee5ng trong vi\u1ec7c tr\u1ed3ng hoa, m\u1ed9t s\u1ed1 \u0111o\u00e1 hoa \u0111a b\u1ed9i th\u1ec3 to, nhi\u1ec1u c\u00e1nh, c\u00e0nh th\u1eb3ng th\u00f4, c\u00f3 gi\u00e1 tr\u1ecb th\u01b0\u1edfng th\u1ee9c cao. V\u1ec1 ph\u01b0\u01a1ng di\u1ec7n ngh\u1ec7 thu\u1eadt l\u00e0m v\u01b0\u1eddn, v\u00ed d\u1ee5 s\u1eed d\u1ee5ng \u0111a b\u1ed9i th\u1ec3 th\u00e0nh c\u00f4ng nh\u1ea5t l\u00e0 tr\u1ed3ng ra lo\u1ea1i d\u01b0a h\u1ea5u v\u1eeba kh\u00f4ng h\u1ea1t v\u1eeba nhi\u1ec1u n\u01b0\u1edbc.<\/p>\n","protected":false},"excerpt":{"rendered":"
Nh\u00e2n t\u1ebf b\u00e0o trong t\u1ebf b\u00e0o l\u00e0 nh\u00e2n do t\u1ebf b\u00e0o ti\u1ebfn h\u00e0nh ho\u1ea1t \u0111\u1ed9ng s\u1ef1 s\u1ed1ng. Khi t\u1ebf b\u00e0o ti\u1ebfn h\u00e0nh ph\u00e2n chia, tr\u01b0\u1edbc ti\u00ean l\u00e0 nh\u00e2n t\u1ebf b\u00e0o ph\u00e2n chia. N\u1ebfu l\u1ea5y m\u1ed9t s\u1ed1 t\u1ebf b\u00e0o \u0111ang ti\u1ebfn h\u00e0nh ph\u00e2n chia, ng\u00e2m ch\u00fang trong dung d\u1ecbch carmine magenta, sau khi r\u1eeda s\u1ea1ch, \u0111\u1eb7t […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":"","_disable_autopaging":false},"categories":[15,19],"tags":[],"class_list":["post-9832","post","type-post","status-publish","format-standard","hentry","category-hoi-dap-khoa-hoc","category-tu-nhien"],"_links":{"self":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts\/9832","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/comments?post=9832"}],"version-history":[{"count":0,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts\/9832\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/media?parent=9832"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/categories?post=9832"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/tags?post=9832"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}