Reliable Reinforcements…!! (頼れる加勢…!!, Tayoreru Kasei…!!) is chapter 253 of the Naruto manga.
Despite her best efforts, Chiyo can do nothing to help Kankurō. She suggests that only Tsunade would be able to counteract Sasori's poison. Team 7 and Temari arrive in Sunagakure shortly afterwards and are informed of Kankurō's condition. Temari goes to see him and Sakura, Tsunade's disciple, offers to cure him. She removes the poison from his body and asks Chiyo to help her find ingredients for an antidote. Tsunade, meanwhile, is concerned that Team 7 may have difficulties with rescuing Gaara so sends Team Guy as backup.