Fig. 6. (A) Spontaneous muscle contractions of an intact B. balanus
following its removal from the shell. Note the contraction of the cirri (C)
and generation reduction in size of the body mass following contraction. The
whitish area highlighted (unlabelled arrow) is the region of the seminal
vesicles/testis. (B) Effect of BMSF and breakdown product 2 on muscular
contractions of B. balanus over time. Values are means ±
s.e.m., N=3, *P<0.05 compared with control (paired
t-test).