Chitosan-graft-polyethylenimine (CHI-g-PEI) copolymer has been used for the improvement of low transfection efficiency of chitosan. The present study aims to test the pulmonary toxicity and efficiency of CHI-g-PEI as an aerosol gene carrier. Mice were exposed to aerosol containing green-fluorescent protein (GFP)-polyethylenimine (PEI) or GFP-CHI-g-PEI complexes for 30 min during the development...

In this paper, we describe the formatting requirements for the CHI Conference and offer a number of suggestions on writing style for the worldwide CHI readership.

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The theory of chi processes with the mismatch operator is studied. Two open congruence relations are investigated. These are weak early open congruence and weak late open congruence. Complete systems are given for both congruence relations. These systems use some new tau laws. The results of this paper correct some popular mistakes in literature.

OBJECTIVE Establishing the factors associated with using healthcare services for the aged in Cartagena, Colombia. METHODS This was a cross-sectional study. A 656 sample-size was estimated for a population of 66,795 senior citizens; stratified sampling was used. A questionnaire entitled "Using healthcare services" (Uso de los servicios de salud) was used; descriptive statistics and logistical ...

demonstrated for all these proteins. However, the assignment of 9 distinct allergen numbers to members of the same protein family is quite unusual. Methods: Currently, the IUIS allergen database contains 12 allergen and isoallergen sequences from C. thummi thummi. The Uniprot database has demerged entry P02225, listed in the database for Chi t 7, into 7 entries, 5 from C. thummi thummi and 2 fr...