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Theorists could account for this force by adding a cosmological constant, lambda, to Albert Einstein’s theory of gravity.

In this study, they found that the lambda phage shares this mechanism.

Now, lambda is enjoying a second life, but it remains a fudge factor without any physical explanation, and one possible basis for it doesn’t hold up.

Not all physicists are convinced that this diquark hypothesis reflects how lambdas really form, however.

With hepatitis treatments in mind, they had previously acquired a drug based on lambda interferons, a lesser-known type of interferon whose receptors are largely restricted to specific areas, like the respiratory tract.