electric impulse signal heart beat pulse display oscilloscope cardiogram graph purple glowing light sine wave modern |
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| navigate by keyword : background beat cardiac cardio cardiogram cardiograph cardiology chart curve design diagnosis display ecg effect ekg electric electrocardiogram electronics emergency frequency glow graph graphic heart heartbeat hospital impulse led life light line medical modern monitor neon oscilloscope power pulse purple rate rhythm screen sine stress technology vector wave |
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| Electric impulse signal, heart beat pulse display. Oscilloscope cardiogram graph. Purple glowing light sine wave. Modern technology vector illustration |
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