Given an abstract, generate a keyword (a noun phrase) that best describes the focus or contribution of the paper. Such keywords can be directly from the given abstract or outside it.

[EX Q]: Abstract: During liquid preservation under blood bank conditions, red cell membranes inexorably undergo damage that decreases erythrocyte survival after transfusion. Accordingly, we have surveyed membrane skeletal protein interactions during storage. We uncovered a decrease in the in vitro formation of spectrin-actin complex in the absence (50%) or presence (60%) of protein 4.1. Actual formation of the spectrin-actin-protein 4.1 complex fell in a linear fashion during the storage period. This fall in spectrin-actin interaction tightly correlated with the decline in total red cell phospholipid (R = 0.9932) measured simultaneously. This decrement of spectrin-actin association could be restored to greater than 70% of normal values by preincubation of stored spectrin with 50 mM dithiothreitol. This storage injury to spectrin-actin interaction might weaken the membrane skeleton and lead to decreased red cell survival. In vitro reversibility of the damage by reducing agents suggests a possible new direction for prolonging the shelf life of stored blood.
[EX A]: Actins

[EX Q]: Abstract: We succeeded in reproducing an eczematous lesion on the apparently normal skin of a patient with atopic dermatitis by scratching and continuous application of an ointment containing ferritin-labelled mite antigen. Percutaneous entry of mite antigen was demonstrated in skin biopsies by Fe-staining. Scratched skin first showed an urticarial reaction typical of type I allergy which later changed into an eczematous reaction typical of type IV allergy. This change was also shown histologically.
[EX A]: Adult

[EX Q]: Abstract: An analysis was completed of 34 patients with dementia who attended a mixed medical day care program over a five-year period. The parameters reviewed included age, home situation, diagnosis, incidence of co-existent medical disorders, management by the social worker, nurses and neuropsychiatrist, the extent of social and program participation, length of stay, and disposition. There was a high incidence of medical problems which were managed effectively because of close nursing observation, availability of ancillary services, specialty clinics, and frequent communication with the community physicians. The social worker assisted families with the management of long-term planning for the dementia patients and the entire social-nursing-recreational therapy team devised programs which encouraged the patients to function at an optimum level. Neuropsychiatric management, including drug therapy, was an integral part of the program. Despite the fact that the dementia patients were at high risk, with an average age of 81 years the average duration of attendance was two years four months and only nine of the 34 patients ultimately required nursing home placement. It was concluded that the day care program served as a resource which devised, integrated, and supervised, in cooperation with the community physicians, the support network and management strategies for the dementia patients.
[EX A]:
Aged