@import url(https://pennsylvaniaphotobooths.com/wp-content/themes/zeyn/css/detheme.css); Throughout the 18th and 19th centuries, improvements in microscope technology such as achromatic lenses allowed white blood cells and platelets to be counted in unstained samples. In polycythemia vera, the bone marrow produces red cells and other blood cells at an excessively high rate. Melancholy is a broad concept that characterises societal, mental and creative conditions. After abnormal cells are identified, additional techniques such as immunophenotyping by flow cytometry can be used to identify markers that provide additional information about the cells. vertical-align: -0.1em !important; var themeColor='#dd3333'; Using a phase-contrast microscope, rather than a light microscope, can make platelets easier to identify. [8] Changes in many organ systems may affect the blood, so CBC results are useful for investigating a wide range of conditions. @import url(//fonts.googleapis.com/css?family=Raleway:700,700italic&subset=latin); Kottke-Marchant, K; Davis, B. [114][115] Changes in these indices are visible on the blood smear: red blood cells that are abnormally large or small can be identified by comparison to the sizes of white blood cells, and cells with a low hemoglobin concentration appear pale. !function(e,a,t){var n,r,o,i=a.createElement("canvas"),p=i.getContext&&i.getContext("2d");function s(e,t){var a=String.fromCharCode;p.clearRect(0,0,i.width,i.height),p.fillText(a.apply(this,e),0,0);e=i.toDataURL();return p.clearRect(0,0,i.width,i.height),p.fillText(a.apply(this,t),0,0),e===i.toDataURL()}function c(e){var t=a.createElement("script");t.src=e,t.defer=t.type="text/javascript",a.getElementsByTagName("head")[0].appendChild(t)}for(o=Array("flag","emoji"),t.supports={everything:!0,everythingExceptFlag:!0},r=0;r

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