ac blood vessel with a cluster of sickle cells obstructing the flow of blood.

cardiovascular magnification erythrocytes dimensional obstruction erythrocyte microscopic biological healthcare background condition treatment rendering undefined medicine mutation disorder isolated vascular abnormal clogged biology science closeup damaged medical genetic disease cluster blocked vessels sickle anemia artery inside crisis sticky closed vessel system stroke crises damage blood cross shape three bunch rigid clump cells close vein cell pain clot flow red cut