The phrase "development of new and existing" is correct and usable in written English.
You can use it when discussing progress or improvement in an area, system, or process. For example, "The company is focusing on the development of new and existing products to stay competitive in the market."
Vaccine design is highly suited to the application of in silico techniques, for both the discovery and development of new and existing vaccines.
A second aim is to give recommendations for their development of new and existing recycling centres and to discuss implications for the future design and organisation.
Vaccine design is amenable to the application of modeling techniques, for both the discovery and development of new and existing vaccines.
SMEs should manage their business with regard to the development of new and existing products and services, proactiveness and calculated risk-taking, innovative marketing, and others as suggested by the innovation variable.
In 1978, Congress passed the National Consumer Cooperative Bank Act to encourage the development of new and existing cooperatives.
Paralleling, and at times even driven by, our growth of biological knowledge is the rapid development of new and existing omics analysis software tools.
Qualitative methods are frequently used in the development and evaluation of new and existing PRO measures, and increasingly used in conjunction with clinical trials.
"The industry-led Oil and Gas Strategy has already highlighted the importance of the sector for the Scottish economy, and the development of a number of new and existing fields play a key role in this".
As a consequence, the German Ministry of Education and Research funded the development of new and already existing academic departments with a total funding of €13.22 Mio within the period of 2002 to 2012.
Agriculture faces an array of interrelated problems that call for development of new and revision of existing cropping systems towards the multiple needs of the 21st century.
Understanding the mechanisms of generation and maintenance of fully functional HIV-1-specific peripheral HTL and CTL responses in chronic HIV-1 infection, similar to those observed in HICs, may be of considerable importance for the development of new, and improvement of existing therapies [2], [4], [7], [15].
