Although study is an essential feature in the title, it is optional in the scheme.
Observations with negative increments were retained in the data because it seemed to be an essential feature in describing the process of tree height development.
As an increasing proportion of drugs undergoing development are poorly water-soluble, solubilization technologies have become an essential feature in bringing them successfully to market.
β-galactosidase activity is an essential feature in probiotic strains.
Package manager support, Gross argues, is an essential feature that makes the difference between the old "hackish PHP development model and the more professional model".
Cell migration is an essential feature of many physiological processes, including development, tissue remodeling and immune responses.
Passive safety features play an essential role in the development of nuclear technology and within advanced water cooled reactor designs.
Dance figured strongly in the early development of drama in the West and remains an essential feature of African and Asian drama.
The review articles in this issue provide an improved appreciation for microRNA (miRNA) as an essential feature of lineage commitment and regulatory guidance during tissue development that, when absent or hampered, often lead to disease states.
Since many carcinogenic compounds require metabolic activation to enable them to react with cellular macromolecules, individual features of carcinogen metabolism may play an essential role in the development of environmental cancer.
