Water travels from the soil to the root xylem through the apoplast (i.e., cell wall space) and/or cell-to-cell, but hydraulic barriers in the apoplast (e.g., suberized structures in the endodermis) can force water to traverse cell membranes at some points along this path. Anytime water crosses a cell membrane, its transport can be affected by the activ-ity of membrane-intrinsic water channel proteins (aquaporins). We review how aqua-porins can play an important role in affecting root water transport properties (hydraulic
Hornerâs Syndrome in Cats. Conditions of the body that affect the nerves supplying the face muscles and eyes can lead to a group of symptoms known as Hornerâs syndrome. This condition is characterized by a drooping eye, an eyelid that is protruding from the eye, or a severely constricted eye pupil.
6 weeks ago I took my dog to the groomers on a Friday. By Monday her 3rd eyelid was 1/2 closed over her eye. I took her to an eye specialist and she immediately asked me if I had had her groomed recently and said it was Horners Syndrome. She said they see it manifest after grooming from cleaning the ears. She gave me drops I can use to dialate the eye but it is not a cure. Her eye is still bad and it is 6 weeks.