A needle (100, 200, 300, 400) comprising: a tube (102, 202, 302, 402) having a hollow interior about an axis (106, 306) and an end including an opening that exposes the hollow interior; a first tip (112, 212, 312, 412) disposed on the end, the first tip (112, 212, 312, 412) formed by a first pair of facets (114, 116) shaped to cut a biological sample and direct the biological sample toward the hollow interior from a first side of the tube (102, 202, 302, 402); a second tip (122, 222, 322, 422) disposed on the end at a location on a circumference of the tube (102, 202, 302, 402) opposing the first tip (112, 212, 312, 412), wherein the first tip (112, 212, 312, 412) extends further along the axis (106, 306) from the end of the tube (102, 202, 302, 402) than the second tip (122, 222, 322, 422), the needle being characterized by the second tip (122, 222, 322, 422) formed by a second pair of facets (124, 126) rounded to direct the biological sample cut by the first tip (112, 212, 312, 412) toward the hollow interior from a second side of the tube (102, 202, 302, 402) opposing the first side, thereby capturing a portion of the biological sample between the first tip (112, 212, 312, 412) and the second tip (122, 222, 322, 422) as the tube (102, 202, 302, 402) advances through the biological sample and driving the portion of the biological sample into the hollow interior; and the needle being further characterized by a slot formed in the tube (102, 202, 302, 402) between the first tip (112, 212, 312, 412) and the second tip (122, 222, 322, 422), by a first cut and a second cut meeting perpendicular to and offset from the center axis of the tube (102, 202, 302, 402), the slot including a sharpened edge to cut and detach the biological sample from surrounding tissue as the biological sample enters the hollow interior of the tube (102, 202, 302, 402). a tube (102, 202, 302, 402) having a hollow interior about an axis (106, 306) and an end including an opening that exposes the hollow interior; a first tip (112, 212, 312, 412) disposed on the end, the first tip (112, 212, 312, 412) formed by a first pair of facets (114, 116) shaped to cut a biological sample and direct the biological sample toward the hollow interior from a first side of the tube (102, 202, 302, 402); a second tip (122, 222, 322, 422) disposed on the end at a location on a circumference of the tube (102, 202, 302, 402) opposing the first tip (112, 212, 312, 412), wherein the first tip (112, 212, 312, 412) extends further along the axis (106, 306) from the end of the tube (102, 202, 302, 402) than the second tip (122, 222, 322, 422), the needle being characterized by the second tip (122, 222, 322, 422) formed by a second pair of facets (124, 126) rounded to direct the biological sample cut by the first tip (112, 212, 312, 412) toward the hollow interior from a second side of the tube (102, 202, 302, 402) opposing the first side, thereby capturing a portion of the biological sample between the first tip (112, 212, 312, 412) and the second tip (122, 222, 322, 422) as the tube (102, 202, 302, 402) advances through the biological sample and driving the portion of the biological sample into the hollow interior; and the needle being further characterized by a slot formed in the tube (102, 202, 302, 402) between the first tip (112, 212, 312, 412) and the second tip (122, 222, 322, 422), by a first cut and a second cut meeting perpendicular to and offset from the center axis of the tube (102, 202, 302, 402), the slot including a sharpened edge to cut and detach the biological sample from surrounding tissue as the biological sample enters the hollow interior of the tube (102, 202, 302, 402).