Prospective bacterial and fungal sources of hyaluronic acid: A review.

The unique biological and rheological properties make hyaluronic acid a sought-after material for medicine and cosmetology. Due to very high purity requirements for hyaluronic acid in medical applications, the profitability of streptococcal fermentation is reduced. Production of hyaluronic acid by recombinant systems is considered a promising alternative.

[Associated action of the measles and mumps viruses on the lymphatic apparatus of guinea pigs].

The immunomorphological and cytopathological properties of vaccine strains of measles and epidemic mumps viruses inoculated individually and together were studied in experiments in guinea pigs. The optimal doses of measles and mumps monovaccines were found to produce morphological changes of similar intensity in the lymphatic apparatus of guinea pigs. Measles virus stimulated increased alterative changes in lymphoid elements with increased inoculations; mumps virus produced maximum degeneration of the cells immediately after the first inoculation.