the female body lymphatic system

font organ art line darkness pattern drawing poster design light wing lymphatic system important human body's immune consists network vessels lymph nodes lymphoid organs tissues work circulate fluid body crucial role filtering materials toxins pathogens production cells anatomy node system lymphatic lymph vessel science spleen lymphoid human medical lymphocyte biology organ fluid skeleton medicine nervous artery blood circulation nerve vein digestion immune internal cancer cardiovascular cell health care disease structure cardiology health circulatory duct gland antibody female body thymus pain patient doctor steam xray