In this task, you are given a sentence. You are expected to recognize the name of gene or protein. Although there might be several correct answers, you need to write one of them.

Ex Input:
The discordant mutants may reflect interactions with a variable domain of a conserved component or unique interactions with specialized components of the basal transcription apparatus in different cells .

Ex Output:
variable domain

Ex Input:
The glucocorticoid target tissues that have been examined ( circulating mononuclear lymphocytes and cultured skin fibroblasts ) have normal concentrations of glucocorticoid receptors with decreased affinity for dexamethasone .

Ex Output:
glucocorticoid receptors

Ex Input:
Pax5 appears to mediate B - lineage commitment by repressing the transcription of non - B - lymphoid genes and by simultaneously activating the expression of B - lineage - specific genes .

Ex Output:
- B