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Fig. 2
Cardiac phenotypes in β2.1-depleted or LTCC-inhibited embryos. A–C: Brightfield images of 72 hours postfertilization (hpf) embryos injected with buffer only (A), or β2.1-MO1 (B), or exposed to 20 μM nifedipine (an LTCC antagonist, C) for 24 hr. A2–C2) In situ hybridization showing hearts of 48 hpf embryos labeled with a probe against myl-7. A3–C3) Tracings of 48 hpf hearts to delineate chamber morphology. MO, morpholino; a, atrium; h, heart; v, ventricle.
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