Abstract: The present disclosure provides a kit and method for constructing a long-acting depression animal model. The present disclosure adopts Bacille Calmette-Guerin (BCG) (or Mycobacterium bovis (M bovis)) and low-dose pertussis toxin (PTX) for combined induction, which greatly reduces modeling cost. A mouse model constructed by the method of the present disclosure can clearly distinguish a time interval of pathological behaviors from a time interval of depression-like behaviors and has prominent face validity and predictive validity. The method of the present disclosure is simple and convenient and does not require a large number of tedious daily operations as the depression model construction by chronic unpredictable stress, chronic restraint stress, social defeat, mother-child separation, or the like. The mouse model of the present disclosure can provide a valuable long-term intervention window for research on antidepressant therapy.

Abstract: A dual-water-tank water flosser comprises a body, a tooth-rinsing component, a first water tank, a second water tank, a first water pipe respectively connected to the first water tank and a water inlet, a second water pipe respectively connected to the second water tank and the water inlet, and a switching element. The tooth-rinsing component is installed in the body and has the water inlet and a water outlet. The first water tank and the second water tank are installed on the body. The switching element is movably disposed on the body and has two gear positions, one of the two gear positions corresponds to the switching element moving to close the first water pipe while simultaneously opening the second water pipe, and the other one of the two gear positions corresponds to the switching element moving to open the first water pipe while simultaneously closing the second water pipe.

Abstract: The present disclosure discloses a water flosser with an image system comprises a body, a water outlet spout, and an image system. The water outlet spout and a camera lens of the image system are disposed on the body, and an area covered by ejected water ejected from the water outlet spout at least partially coincides with an image area of the image system.